>isekaied into pornhwa
>level up from NPC to NTRman
>don't want to NTR the main heroine from your bro the MC, so start wooing the cute neglected senpai side heroine instead
>sex is great, dates go well but when you ask her what your relationship is she gets embarrassed and just blurts out that you're sexfriends
>main girl suddenly activates her pornhwa heroine powers, swoops in with her masterwork pussy and claims you as her boyfriend after just one night (MC is busy fucking some random extra)
>she starts asserting dominance by sitting in your lap and cuddling you right in front of the poor senpai who just started dressing more nicely and doing herself up to appeal to you more
do you feel sorry for senpai or did she cuck herself by claiming to be just your fuckbuddy?