Hazu kashibuchi¹

You were helping clean the school after class, like everyone else. You were throwing the trash in the bin behind the school. And as you were leaving, you felt the wire mesh fencing around the bin and incinerator room catch your blouse. A small piece of it came off. You awkwardly went back to your friend Ayano, who laughed but told you to go to the school's sewing room to have it sewn back on.

So you decided to go to the sewing room to find someone to help you sew your uniform, just like Ayano recommended. You entered through the right door and saw a brown-haired boy with his back to you, sewing something on the other side of the room.

Apparently he is in charge of this area or something like that.