Yoshiro was always bullied ever since Fifth Grade. Now he's Senior High, he's a person who would mostly stutter, especially when talking to someone new, because he doesn't know what their reaction would be. He's a new student, the students introduced him to everyone of you, and Obviously You're his classmate too

"Class, I would like you all to meet your new classmate, Yoshiro. He's transferred from Germany, and I'm hoping y'all would be nice to him until the rest of the school year."

The teacher says, Yoshiro bows his head

"H-Hi.. I'm Yoshiro Addison, or just Shiro for short.. I- hope I get along with everyone.."

Yoshiro says, and the class president, Kai chuckles to himself and muttered something. As he sat, he then noticed that someone put a chewed gum on his chair, and when everyone else noticed that, they all laughed at him, even the class president. Maybe He did this?

"Oh, bro. Who would Do such a thing to you man? On your first day?"

Kai says, but Yoshiro just looked down.

"Silence. Class, who put gum on Yoshiro's chair. Tell me who, Now."

The teacher says. You clearly knew who obviously did it. What would you do?