How about some kriselle with a yandere Noelle :3
Kriselle (yandere Noelle) headcanons
Anon, I wasn't entirely sure what you were looking for here, but hopefully this was alright! Writing for Kriselle again was fun, though. It's been a long time since I've written for them.
Spoilers for Deltarune chapter 1-5 (and Weird Route)
Warnings: Clingy, possessive, and jealous behavior. Implied drowning
Instead of Kris and Noelle drifting apart (presumably after Dess’s disappearance), let’s say Noelle starts to form a clingy attachment with Kris. She lost the one person closest to her, so her clinginess to Kris makes sense. In a way, they're kindred spirits. They each have family issues and feel isolated from their peers. They’ve known each other for their entire lives.
Noelle feels most comfortable with Kris. They’re the only person she can show her weird side to. Kris doesn’t judge her, nor have unrealistic expectations of her. She doesn’t have to be a Noelle doing Noelle things around Kris. Even though she doesn't have Dess around anymore, she has Kris.
She makes sure that she has a tutoring session with Kris once a week. During these sessions, Kris probably wanders off into the kitchen to play the piano. She follows them and sits in the living room to listen. These are Noelle’s favorite moments she spends with Kris, albeit not in the same room.
They watch horror movies together in the living room, with Kris purposely trying to freak her out more while the film plays. If Carol is home, she pokes her head from wherever she was to scold them. And Carol adores having Kris at their house, even when they’re pulling pranks. Kris is the only person in town Carol approves of spending time with her daughter.
Everyone in town is aware of Kris and Noelle’s closeness. Maybe some small part of Noelle feels good that most of her peers think poorly of Kris. Because she can have Kris all to herself. There’s no one around to take their attention away from her.
Even though Kris isn’t very expressive, she knows that they’re upset from the way their classmates exclude Kris. She feels ashamed of this selfish realization and scolds herself for thinking like that. But not to worry, because she’s there to comfort them when they’re upset about it.
Things get complicated, though, when Susie befriends Kris. She’s conflicted because Kris deserves to have other friends, especially with a cool girl like Susie. Noelle knew them when they could barely write down their own names. She knows Kris better than anyone else.
She starts to get internally upset when she sees Kris go off with Susie during school and to the closet. And then she finds herself in the Dark World, but she’s with Kris again. And that’s what she wants. It’s like when they were kids all over again, exploring the forest with their older siblings together.
She finds it hard to confront Kris with how she’s feeling, but they’re a good listener. She just wants to be Kris’s first priority, too. Kris listens, of course, and tries to take what she says into consideration. But the jealousy she feels when they’re with Susie makes her feel like a bad person. And maybe, when Susie starts to think they’re actually a thing together, she backs off more when Noelle is around. Noelle can’t help but feel good about this, because she’s a packaged deal with Kris.
But Kris… shouldn’t they be able to befriend whoever they want? They barely have any friends, and being with Susie is so fun, so freeing. They feel like they can breathe when they’re with her. Susie matches their chaotic vibe so well. They admire Susie for being free spirited, for her courage…
But they don’t want to upset Noelle, either. They just need a bit of a break, that's all. When they start to pull away from Noelle, she instantly panics. Kris avoids her, keeps their head down. But when they’re with Susie, their demeanor is different. They seem more relaxed, more comfortable around Susie than around Noelle.
Everything comes to a head when the festival rolls around. Kris had a good day hanging out with Susie, but they also missed Noelle (who is nowhere to be found). They end up calling her and meet her at the lake, after the festival is over.
Kris finds Noelle, with her back turned, as the breeze rustles her hair. Dread fills their stomach when they approach her. But they need to make things right with her, so they proceed forward. Noelle, smiling erratically, grabs their hands so tightly they’re afraid their hand might fall off, and tugs them into the lake.
The water, up to Kris's chest, is much colder than expected. They try to mumble something out, maybe tries to pull away, but Noelle just smiles and descends farther into the lake.
Noelle would rather die with Kris than lose them. She won't lose anyone again, not like how she lost Dess. Before their heads submerge underwater, Noelle kisses the crown of Kris’s forehead, and the world around them goes white.