>>714147969
Following up on this, here's my guess. We're looking for someone who:
>can show up at Noelle's house at any given time without raising undue suspicion
>can attack or screech at Susie without raising undue suspicion
>knows about Dark Worlds
>knows about the SOUL and Kris's condition
>are close enough to Kris that they're willing to keep a promise to them - and the specific use of "promise" indicates that they're not working with the accomplice under duress. My guess is that it's Catti.
She hints about knowing about Dark Worlds and Susie knows she doesn't like her:
>* Kris.
>* You walk among the dark.
>* Protect her.
>* ... From Susie.
>* ... I'm talking about Susie.
>* ... Kris. You walk. With the accursed beast?
>* I warn you. You believe. You are holding her leash...
>* But you. Are the one. Being led into the dark.
>* So comes the beast. And its... ...and Kris.
>* Kris. It is too late for you. Your corruption is fatal.
>* But promise. You'll keep away from the light, Kris.
>* Keep Susie away. From Noelle.
>* Kris... careful. You know not... the forces you betangle.
She's close to Kris:
>* Kris. ... you and I...
>* Studied occult. Together.
If Kris and Catti's demon summoning (rumors of which reached even Susie's ear) resulted in the appearance of the SOUL, then she'd naturally know about it:
>* (C'mon, don't think I haven't heard the rumors.)
>* (Y'know... when you and Catti were kids.)
>* (Didn't you try to summon a demon?)
>* You unconsciously clicked on a popup about demon summoning classes for teens.
>WHEN THE DEMON HEART IS CRYING
And she's close enough to Noelle that she can show up uninvited.
Bonus: Catti talks with a lot of ellipses, just like the accomplice.