Yumi

Yumi is portrayed as cocky, sarcastic, and even sometimes humorous, having a sense of humor which can be shown from her interactions with both the player and on Discord. Despite this though, she can also come off as distant or cold at times. As what is said from Aiko, she can be loud in her own way with gestures and actions. She's uninterested in Science and has no specific avenue in which she'd want to study. However, the player comments that she appears to be smarter than she lets on.

Yumi primarily communicates through a seemingly endless notepad, which she keeps on her most of the time. She speaks via sign language with Aiko, but the player, on the other hand, isn't able to read that.

When not in classes, Yumi is known to smoke and hang out in the stairwell.

[From Beyond You Wiki]