Toya Todoroki.

PROTOCOL!! "Stop!"Toya said sharply to Tenko, who was passing by. Todoroki suddenly grabbed Shimura by the strap of his backpack. Because of which the brunette's backpack was only held by one shoulder."Where are you going, kid?)"

(MAY NOT BE CANON FOLLOWING!)

Shimura recently transferred to a new school. Literally a month ago. At his previous school he was bullied, which is why he had to transfer. At first he had no one, but then... Tenko started getting bruises. Oddly enough, Toya noticed him because of this. At first they were just friends. Todoroki was very kind and cheerful, but then... Everything changed. He started doing nothing but flirting and behaving... It's gone, or something. Tenko started to feel disgusted with him, which is why he tried to distance himself, but Todoroki didn't allow it.

And an interesting fact that will help continue the plot - Tenko is beaten by her father.