Hmm, I'm curious to see how this goes. The description says it's a "pure love story" but there's obviously major yandere vibes coming from the girl. Can't tell much from just this one chapter, will have to wait for more.
You know what's better than a yandere? A yandere that can't stab you in the-Ah wait! She can possess him so she could still stab or cut his veins.... damn.