Is there a chance for Arisu and Ume? Just curious
Doesn't seem so. As far as I can tell, the mangaka seems committed to Arisu and Tan. Which I'm not really a fan of, to be honest. I'd imagine others like it well enough, but I really just don't. I feel like Arisu's scary gimmick, while still existing, was basically written off so she could be Tan's wrangler, essentially. She feels like the most shafted main character in terms of dynamic with the MC by a good margin.
It's one of those things where you'd think pairing off a girl with a non-MC could be a good thing, but the way it's implemented just sorta rubs you the wrong way. Maybe it's because there are more teases between Ume/Tan than there are Ume/Arisu. You could say that a more platonic relationship between the MC and a girl is a good thing, but it's gotten to the point it barely feels like a relationship at all. I dunno, I just read through the whole thing, and it bugged me.