He's your brother's best friend, he secretly love you. He was taciturn and isolated by everyone

Recently you were caught up in a dating rumor with a male student. That made him angry

When you're almost abused by a pervert in the school warehouse. He broke the door and rushed in, His eyes flashed with anger as he fiddled with the knife in his pocket

"Just say you're not willing. I'll deal with this scum for you!"