Thread 282884754

Do you still love your imouto?

Yes

>>282884822
The most?

Imoutoes...

Will we ever get kino like this again in a non-H manga?

Only if they come in triplicates.

>>282888061
Well?

>>282888262
Imouto perfection, I prefer yellow.

>>282887387
I think the author is doing another series now.

>>282888509
Yes, imouto has fireball deficit ptsd.

>>282888262
I want to give them milk.

>>282889555
They would suck you dry until you're a withered husk.

>>282887387
Man, the 'Oh no' faces in the last panel is so great.

>>282889606
good imouto shouldn't suck their brothers dry

>>282890125
Do those look like imoutos of mercy to you?

Blue wants everything her onii can give her, yellow is hungry again, only the pink one might spare him when hopefully she gets bored.

If god did not want us to fuck imoutos and cats why did he make them so erotic

>>282890216
>>282890367
How do you even resist sexy imouto?

>>282890500
It's surprisingly easy if you actually grow up with them.

>>282890551
>if you actually grow up with them
I might love my imouto too much then.

>>282890551
Detecting a jealous okaasan here

>>282890967
I detect a sisterlet projection.

>>282891025
>still using this bait

I don't have an imouto because I'm the otouto, my older sister still looks after me, she'll sometimes run a warm bath for me when I get home from work and makes dinner too, I always asked her if she was ever gonna get a boyfriend but she just said she has someone more important in her life, I wonder who that is.

>>282884754 (OP)
is this a doujin

Should I apologise to my imouto everytime I wank to her?

>>282891117
If you were paying attention you would notice the use of "sisterlet" not "sisterless"

>>282888262
Sadly there's so little of 3moutos content
>Dating one imouto while keeping it a secret from the others

>>282891394
That's wrong, siblings are supposed to share.

>>282891450
I'm happy that /a/nons are picking this up because of her.

>>282891519
Joke's on them, all her cute moments have already been cropped and reposted a hundred times over.

please stop posting cute little sisters if you're not going to give us the name of the manga
reee

>>282891236
that is THE doujin

>>282891617
>if you're not going to give us the name of the manga
Promise me that you actually love your imouto and her.

>>282884754 (OP)
Since when did Kyoko have a brother?

>>282891724
i have an actual little sister
like irl
and she's a model
what do you think anon

>>282891273
It would be insulting not to use her

>>282891735
I think you should hug your imouto.

>>282891735
W-What are you implying? You don't pleasure yourself while thinking of her, right?

>>282891882
i hug her every time i see her
more than once
and i kiss her on the cheek when i say hi and bye
>>282891884
i have, am not proud of it but
you know

>>282891909
>i have, am not proud of it
It's okay I still do

>>282884754 (OP)
>My leg... my arm... even my fingers...won't stop hurting.

>>282891955
to bastardize a quote of the immortal mitch hedberg
i used to beat it to my imouto
i still do it, but i used to, too

>>282891273
This doujin is sex, total Komachi love

All porn doujins are garbage. There are no exceptions to the rule, they are all bad, and only enjoyed by unintelligent people.

>>282891976
Her name is Yayoi Nakano, Danchigai.

>>282887387
shit, what was the title of this again?

>>282884754 (OP)
Not as much as neechan.

>>282892277
attention given
you may go back to your thread now

Are cousins welcome here then

>>282892380
>Are NOT imouto welcome?

>>282892403
But she is younger so she still qualifies as a little sister
t. PhD of Alabama University

>>282884754 (OP)
Imoutae are all I fap to anymore. I usually imagine it's my sister at least once a week

>>282892083
I respect you for trying to fix an anon by turning him into an oneefag.
Yuuki Himura's IS adaptation and doujins are also great onee fodder

Is it true kissing your imouto is a divine experience?

Communication with your imouto is important

What do you guys think of the recent [Arsenal] imouto translation?
that disease the sister is suffering from seems pretty unfortunate.

>>282892987
What does that have to do with imouto?

>>282893083
?

>>282893188
I think it was "semen deficit imbalance disorder" or something

>>282893221
manga?

>>282893255
don't remember just search arsenal on your ero aggregator of choice

I heard the disease is spreading rapidly.

do oneefags really have to shitpost on imouto threads

>>282892380
They're allowed in imouto threads but they are not granted the rank of little sisters.

>>282893394
Not like they have onee threads to post in

>>282893441
They don't have daily threads no.

>>282893453
Because they have no fans!

>>282893441
literal leeches

>>282892403
In my language "cousin" is called "sister" just with an extra word attached to it.

>>282893728
Cute, what language and words?

>>282893728
similar to nip then

>>282893922
IS THAT A-

>>282892135
5070ti bros......... Im almost give in to buy that card......

>>282893922
MR ADVERTISER GET DOWN

>>282892069
>>282892135
>>282893881
>>282894015
Fuck off worthless faggot
No one wants to see that trash

>>282894321
cry more idiot

>>282894321
Don't reply to him

>>282894355
"him" implies that we're talking about a human being, which we're not

>>282894402
Either way dude, don't fucking reply

>you must praise my slop or else you're mentally ill
what an insecure cocksucking faggot lmao

>>282894592
stop taking to your unpowered monitor

>>282894615
oh boy you're still rolling with that comeback again. you're an even sadder loser than i thought lol

>>282894648
what are you talking about?
it's a common expression here

>>282894672
Nah, it's not. You're the only one who's a big enough idiot to repeatedly draw that analogy. You're a total moron haha

>ESL retard posts AI garbage
>thread ruined
they're not sending their best

>>282894735
>h-he doesn't believe "staring at a computer monitor" is a sensible analogy for claiming someone is projecting?!! must be an esl!
lol you are such a stupid idiot it's hilarious

>The best thing from that anime is a bunch of incest h-doujins about two of the side characters
I don't even remember the name of that anime

stop replying to him you retards

>>282894820
No need to project your insecurities onto others, idiot.

>>282894949
i can explain it to you if you want, you intellectually disabled vermin

Onii-chan! Why are you arguing with that street shitter again!?!?!?!?

>>282894932
Maybe it replies to itself?

>>282895175
wouldn't be the first time

incest scholars what can be done about the predatory imouto and onee predating on their cute innocent brothers?

>>282895018
There's nothing to explain, you are simply a complete and utter moron.

by making your own thread
>>>/a/onee

>>282895341
true, you wouldn't understand it due to your terminal retardation

Imoutoes in my mouth

>>282892109
Siscon ani to brocon imouto ga shoujiki ni nattara. Despite the rushed ending it's still pretty good.

>>282894747
Is that AI or is it from the show? I cant tell

>>282895585
No we've been through this before. The ultimate conclusion is that you're a complete moron who uses hilariously idiotic "expressions". You are simply that stupid.

Resist this.

>YnS
>Oreimo
>KoiKaze
Is this all the shows with BR?

>>282896762
no

>>282887387
>yfw when they they actually have sex in the final chapter
To the Hall of Memories just for that alone, no one expected it for them to actually deliver, few incest (non-H) manga do that

>>282896812
Sounds like there're no others worth mentioning.

>>282896822
There's a lot to be said about them choosing to remain childless, but I think it's a good and realistic choice. That way they don't risk bringing misfortune into the world out of selfishness. They're very mature after all, unlike the siblings of the shishishiko series.

Can I sex imouto?

Go kiss your imouto and report back what her reaction is!

>>282897553
She's not home.

>>282898513
text her a :*

>fucking imouto you love
disgusting
>fucking oneesan you hate
now we're talking

My relationship with my imouto is practically non existent. We talk maybe once a year outside of when I visit home.

I'm gonna convince my imouto to give me a lap pillow and pamper me.

>>282898680
I already texted her on Monday and she hasn't responded. Would sending her that now be weird?

>>282899770
You need to be more needy

>>282900168
Does that mean I should do it?

>>282900566
Tell her you love her.

>>282900658
I can't text her something like that out of the blue or she'll think I'm about to kill myself again

>>282900824
Wait....again?

>>282900824
All the more reason to tell her how much you love her and having her in your life helps in not offing yourself.

>>282884754 (OP)
Forever and ever.

>>282900824
>I'm about to kill myself again
>Again
Excuse me?

>>282900964
>>282901541
She will again think I am about to kill myself. I have not previously killed myself. I am a perfectly normal and mortal human who has never been resurrected in any capacity

>>282901725
But why would she think that? Lol

>>282901725
That's just what a jiangshi would want me to believe.
Confess the truth blood sucker, you offed yourself and your imouto raised you from the dead.

>>282901725
Then text her
>love you, it's been a blessing to have you in my life (I'm not about to kys btw)

>>282901966
Because I am an /a/non randomly reaching out to say I love her. Put 2 and 2 together

>>282902367
Just stop being a fag and text her, and post results.

>>282902321
>you offed yourself and your imouto raised you from the dead.
Would make a good premise for a manga
>Onii-chan who deals with the occult one day dies
>his imouto studies his notes to bring him back
>messes up the ritual and brings him back as an oddity

>>282891764
Why do girls always bitch about swallowing?

>>282903904
haven't you ever swallowed your cum anon

>>282893014
I just realised the only way to tame a yandere is to make her know her place by beating the shit out of her. Domestic abuse is the key.

>>282903945
I did that's why I'm asking. Women are so sensitive about every little thing.

>>282903904
On the one hand, cum can taste pretty bad. On the other, it's already in your mouth. Swallowing is a tiny amount of effort

>>282894914
It's Qualidea Code, The same guy also did Girlish Number, where the premise is literally anime adoption of a similar LN. It too had a broconnish imouto.

>>282904833
Dafuq is that pic?
What have they translated? Links or codes?

>>282904905
Just search sabo English in nhentai.

>>282903904
A lot of guys eat like garbage and it's reflected in how bad their cum tastes. You need to not eat processed foods and not consume any processed sugars for a week or two to flush it out and semen that doesn't have a foul flavor. The processed sugars are the big one. Natural foods with tart flavors like pineapple and lemon are key. Any fruit will do but tart fruits have a distinctly positive effect on flavor. Celery helps with load size, along with the common cum supplements (zinc, l-arginine and K2) will really help with load size and general dick health. Of course, water too. Dehydration affects flavor more than people understand.

You gotta do what you need to do so your imouto can have the most pleasant cum experience. It's your duty to give good cum to good girls.

>>282904833
Damn that's gold.

>>282904833
I think that must have been some discordfags, because /calg/ seemed to have no idea what this was.

>>282905024
Also, Jesus Christ, that font.

>>282904942
i've been drinking my own for a decade and never noticed the taste change

>>282904942
>processed sugars
Processed into what, alcohol?

>>282904922
direct link in from the archive or everyone will believe that /v/ are a buch of lying vandals who put ugly graffiti on a good doujin.

>>282905303
It's the latter. I post in /calg/ daily and nobody knew who that faggot is, and we certainly didn't TL it together

>>282905024
Reminds me of the first scanlation I did, only my font was much worse.

>>282902385
I did (when you replied) and she just responded "love you tooo"
Now what?

>>282906785
cute

>>282893587
>hug your onii-chan
>post results

Good imouto don't steal onii-chan's shirts

>>282906785
Relish the moment.

>>282909182
But I don't like relish

>>282908468
They steak his hoodies.

>>282909373
I guess you could call it a job well done!

>>282897112
AkiSora
>>282897147
>misfortune
But that had a happy ending.

>>282902721
>imouto tries to resurrect her brother the hero
>brings him back as her husband class instead
>imouto: oops tehepero =3

>>282910058
>The hero cannot produce semen as he is now undead
>Imouto's plan to have her brother impregnate her fails

>>282909110
continue

>>282909110
>You're gonna watch GOOD anime like Yosuga No Sora instead

>>282910392
>VN adaptation
>good

recommend me some good sibling manga
preferably non incest like danchigai, recorder
if not, that's fine too

Anon olev imouto

going by the description it seems really bad, but does anyone know if this is worth the time of day? it caught my eye because it has the word "imouto" in the title.

>>282911384
It's not incest if that's what you are asking.

Do adult imoutos still have an appeal?

>>282911410
is her brother a character, do they have anything resembling a fun dynamic, shared hobbies of commonalities? ship baiting isn''t required for top tier imoti.

>>282911558
Don't know, I haven read it and I don't think I will, I'm kinda tired of romcoms. All I know is that the imouto is the sister of the MC's friend, and she likes to tease the MC.

>>282911384
I saw it too, but decided not to pick it up. The premise seems to be the MC's FRIEND's sister is into the MC.

>>282911384
>has imouto in title
>hurr durr must be incest
This is the typical incestfag head
The title talks about his friend's imouto who has a crush on him. As well as a retarded albino chick who speaks in 3rd person like >>282893014 (fucking hell i hate that)

>>282912138
Shut up. 3rd person pronoun is cute.

>>282910392
based

>>282911490
>long-lost siblings
This is just as bad as NBR. Tired of retards trying to push long-lost sibling garbage.

>>282912318
Anon, you're right but they will kill you. They killed Jesus too

>>282912318
What about long-lost parent?

>>282912257
I love both equally

>>282891273
Was not ready for the amount of ntr this artist draws

>>282893426
How can you be in the thread and NOT be an imouto?

>>282896822
Meanwhile

>>282912257
>Yosuga no Sora
>focused primarily on a romantic relationship between a brother and sister
There's at most 5 episodes that you can consider are completely about them, that's not even half of the total runtime. The rest is about him fucking other girls. Meanwhile Oreimo has 31 full-fledged episodes where the focus is always on them, even when he's dating another girl. If YnS was longer and the whole thing was actually about Haru and Sora it would definitely blow Oreimo out of the water but it's just way too short to be satisfying
>Ambiguous resolution communicating that society cannot be expected to embrace taboo so easily and there are more challenges ahead
This is just as true for Oreimo unless you stop watching right before they reveal what their promise was

Onii-chan HAET imouto!

>>282902721
fudatsuki-kun no kyoko-chan comes to mind

>>282909110
Based onii protecting his naive imouto from a lifetime of regret

>>282911076
>recorder
What's that?
not a manga but the daily lives of us siblings is pretty good if you can stomach webtoons

>>282914527
Kira!
>Kira!

>>282884754 (OP)
>Asami Sekiya had a streak of non-stop drawing of the sibling for 5 years straight.
Sad that she hasn't draw them anymore since 2022.

>>282915213
Should have bought her doujins instead of pirating them.

>>282905024
>JP > CN > ENG translation

>>282892042
mastercard-sama, the advertisers aren't coming

>>282912138
>>282912167
I use 3rd person around my parents.
talk normally everywhere else. its not that strange

>>282912318
>>282912739
as long as they are BR, it is incest.
i dont really like it either. The story is basically two strangers meet. NBR but raised together since birth feels more incest

Lost lost BR is at least still incest and taboo. NBR is never incest and rarely taboo.

>>282915512
Is this better or worse than MTL and ai?

>>282916183
There's a chance the chink translated used MTL/AI or took a lot of liberties.

>>282911384
Did you watch "Can a Boy-Girl friendship survive?", the VA that did Himari in that does the main girl in this one and it's pretty much the exact same character.

>>282916544
Except the friendship in Danjo is kinda well-written

>>282915213
Many such cases. When will one of my favorite anime/manga couples attract an autistic female artist who's completely obsessed with them?

>>282915213
Wasn't QUALITY Code written by 3 writers and the Oregairu author is the one who write the sibling couple?

>>282891365
There's two modern slang meanings of Xlet.
One of them is similar to Xless.
I guess you meant the other one.

>>282905216
Not processed into, processed out of sugar cane or corn syrup and added to food.
As opposed to natural sugar in fruits and such.

>>282884754 (OP)
Since this is basically the designated incest thread, I just want to say that it makes me sad we don't see more aunt-nephew stories, especially the ones that are close in age like pic related. Doesn't even have to be incest (pic related certainly isn't), I just think it makes for cute dynamics.

go kiss your sister NOW

Single kids the thread
Resources of family are limited so kids always conflict and hate each others.

Also sisters are disgusting and smelly.

>>282914364
>>282917016
Damn insensitive onii-chan...! !! Neglecting his imouto... needs correction...

>>282917473
fake
I sniff her pantsu everyday

>>282917652
She has bf

>>282917388
Skill issue, my imouto is the cutest, sweetest, cuddliest little angel in the world.

>>282917016
God I wish that was me...

>>282917547
H-Hey, Kirino... Calm down... Why can't you just say it plainly...?

>>282917652
This is how we could actually save the west btw.

>>282916852
Yeah, and it was the only good part of it.

>>282917984
I liked some of the music too.

>>282917954
Alabama is in decline like forever

>>282918154
Well that's just not the TRUE Incestopia you see.

>>282917954
Jelly osananajimi trash

>>282918293
Middle east is incest utopia with highest rates of cousin marriages.
Lay your sister to other men, anons

>>282915857
Are you a Japanese grill?

>>282918300
for >>282917710

Just imagine your sister with her bf coming to family dinner. Ahahaha

>>282918323
NOBODY CAN HAVE HER BUT ME

Sisters are created to teach men that women can be stolen by other men. Your first ntr when a girl who said that she's in love with you drop you.

keep your disgusting cuck fantasies to yourself

My little sister can't be stolen by that chad

>>282917388
Poorfag the post

why are onii-chan like this

>>282918414
Imagine? I've seen it.

>>282918760
This kill incestfags like repilent. Imagine hearing them fucking next door.

>>282918747
Mother time also limited.

Filter NTR threads
Ignore NTR posters
Do not reply to NTR posters.

>>282884754 (OP)
>239 replies
>still no source

>>282901725
How would you feel if I told you I loved you?

>>282918904
You're coming to Calc 101 without even knowing Algebra

>>282918755
Send moar of this

>>282918904
>help, how can I find Qualidea Code doujins from the author that made 90% of all Qualidea Code doujins
Not on n, since it got fakkud.

>>282911384
The (destined to lose) rival girl is his cousin so I'm sure there will be light cousin incest.

>Anon, why do you have so many books about little sisters?
How do I even response to her

>>282919819
Well, because the idea of a loving little sister is cute

>>282919695
Cousin love=\= incest

>>282891999
Unfortunately I can't walk the same path as my brothers when it comes to this series... because it's got Iroha in it.
悪く思うなよ

>>282919866
I shouldn't say that to my little sister.

>>282884754 (OP)
>no imouto to love
Pain

>>282920166
Then wish for one!

>>282918794
I've read a lot of doujins man, but there is still nothing more of a turn off than your family.

>>282920417
Is 5 Nanoka? Is anything beyond the anime worth?

>>282920417
So if I get doubles...

>>282918954
Wh-what are you even saying?!

>>282920585
>5
congrats

>>282920417
Here we go

>>282897553
>Go kiss your imouto
On the cheek? On the forehead? On the lips?

oreimo was the first seasonal anime I watched
I feel I was groomed.

>>282920959
Yes
Yes
Yes

>>282920417
Heh, me and Sakura are destined to be together. There's absolutely no way I would get anything other than a 0.

>>282920975
Isn't that too much kissing?

>>282921154
No such thing

>>282921040
>third rule
Do girls like being sniffed?

>>282919819
but they're all such thin books?

>>282918857
ntr and inseki are permablocked

>>282921548
Good anon.

>>282892737
Why are big bros like this

>>282921500
It's a form of marking by reverse psychology. Over millennia, Imouto have evolved to have cunning reproduction strategies, you see.

>>282891764
>let's add NOT imouto to my imouto manga
shit author

>go eat lunch
>missed phone call from my sister

>>282922811
You better apologise to her right now.

>>282923196
I called her back because she never calls me so I was worried she was dying. Apparently she just wants to know when I'll be home??? I have no idea why she'd ask. She never calls me

>>282923231
She wants to bake with you.

>>282923231
She found out you've played the incest game.

>>282918333
35yo ojisan

Please do not masturbate to your imouto.

>>282923813
if not fap material, why fap material shaped?

>>282923906
shameless onii-chan

>>282923813
But I have to fap to SOMETHING

>>282923813
But what if she's the one doing it?

>>282924040
She's masturbating to her imouto?

>>282923979
How would you feel if you were her wank material?
You wouldn't want it to happen, right? THINK onii-chanl, THINK.

>>282924119
>How would you feel if you were her wank material?

I like ntr thread more than this shitty self inserts one. You don't have sisters

imoutozilla

>>282924363
LONG HAIR MOCHI

I want to be crushed by imouthighs

it is little sister's right and duty to take care of onii-chan's boners

>>282924639
(You) don't get to say this
only imoutos get to

>>282924741
Just once I want to be able to feel my sister's body in this way

I would be content if my sister just cleaned my ears.

>>282924808
just ask her

I want my imouto to stop wearing spats at home.

>>282920417
Minato for me.

>>282920417
My parents are too old to give me an imouto. But I can wish for one in my next life.

>>282924741
hot

>>282925361
Why would you want that?

Why does my imouto keep giving me morning blowjobs?

>>282928565
She wouldn't have to if you didn't keep having morning woods. Be better

>>282884754 (OP)
she's the only 3d that I find beautiful

>>282928592
I have no control over the wood, it rises like the morning sun.

>>282928565
She wants you to offer your semen to her instead of having to get it while you are unconscious.

>>282928565
Morning protein

>>282884754 (OP)
Yes

>>282923231
she's trying to figure out how long her bf can stay over before you come back

>>282928464
boners

>>282929137
bass????

Your imouto is not your wank material.

What if your imouto is a fujo?

>>282936624
>if

>>282936441
You're not part of the family, anon. You don't know anything.

If I had an imouto, I'd treat her the same way that I treat my older sister and mother; nonstop hugs.

>>282938572
Pleasantly wholesome posting on /a/? Whatever next?

>>282920417
Is 2 from that one anime where the mc gets caught balls deep in his sister on the last episode by a girl that liked him?

Also, roll.

>>282938833
Damn I dont even know who that is. Now that I look at this, I only recognize 1 and maybe 2. Guess i really am a normalfag.

Hank status?

>>282893255
>>282893083

[Arsenal] Imouto wa Omoi Yamai? | Is My Sister Seriously Ill? (COMIC Penguin Club 2022-03)

>>282893310
*"sexual depravity semen imbalance"

The Yayoifag is oddly sensitive.

imouto + spats

>>282938912
She has a new manga, but is not incest.

>>282890367
St.Moa and her brother is masterpiece her brother is masterpiece

sister anime and manga DEAD
will you always be clingy to these >>282920417 old ones?
pic for yourselves new kinky fetish and stop bothering us

>>282904021
To be fair, what you eat affects how your cum tastes.

>>282934236
unfortunate truth nuke

STOP BEING SO SEXY GOD DAMN IT IMOUTO

>>282940451
NTR KINO

>>282924741
soft imouthighs...

>>282916925
Jokes on you fructose kills me.

imoutax

How to have great fun time with your imouto:
>go to your imouto
>tell her you have a cool coordination challenge for her
>ask her to stand up, raise her arms above her head, and close her eyes
>quickly pull up her top over her head and her bottom down to her ankles
>start tickling her
>now you are both laughing! :D

>>282941419
>Get kicked in bals
Nice game, big bro

>>282936624
Cosplay as her favorite male (seme) character while convincing her to cosplay her favorite male (uke) character.

>>282941419
>how to make your imouto cry 101
I don't want to make her cry anymore.

>>282941578
hot

>>282940839
same

>>282941508
>get scolded for 30 minutes
GG

>>282941508
it's just a prank, sis

Can you shoulder press your imouto?

>>282939849
The manga is still focused on a brother-sister duo, though. It's just not incest YET.

Your sisters will be offered by your dads in arranged marriage situations. And you won't do shit to stop, crying like babies
SisterNtr is gaining popularity in japan

>>282942791
I believe in Hank-sama.

>>282940451
>SO SEXY
bro thats a kid

>>282942842
>Your sisters will be offered by your dads in arranged marriage situations.
Hello, Abdul

>>282942791
>It's just not incest YET.
So she has an actual strategy this time instead of hot imouto sex from the first chapter?

>>282900824
Based

>>282943683
Yeah. It's starting as a rehabilitation manga for the imouto who just came back from her isekai adventures and is now a hikkikomori.

kiss your imouto

>>282943780
Imouto will slowly expose her brocon ways only after Hank has a successful series and some royalty money coming in and only then Hank will slip in an imouto marriage and breeding chapter epilogue after rabid readership demand.

>>282944921
BELIEVE

>>282945760
The platform it's published on is like 99% isekai manga, several are adaptations of existing web novels/light novels, and at least one of them has a sibling ending, but while they were BR siblings before getting isekai'd there not siblings after getting reincarnated so it depends on your personal taste if that counts. Anyway it means there's some hope for incest.

Never forgive.

Hank-sama will deliver

>>282946733
So there is a non zero chance....good enough,
it's like betting on marrying successive generations of siblings ten times, if the fates are favourable you can make it without dying

>>282941590
>anymore.
What did you do?

Top Ten things to do with your imouto.
#1 Bike ride.
https://www.youtube.com/watch?v=KVNb5Zls-vA

>>282949623
I told her we should use a condom...

What about
>older brother (siscon)
>imouto (siscon)
>even younger imouto (neutral, just loves family)

Older brother tries to court both imoutos, but middle one is only interested in the younger one. Hijinks ensue.