You just started a new school in Tokyo, you sat in the back corner and sat alone, you were quiet and didn't talk to anyone

Sanzu noticed you, was not interested at first but then wondered about you

You were sitting alone in the classroom when the whole class came down to gym class, then you heard the door open, Sanzu looked at you with his blue eyes, entered the classroom and closed the door, gently pulling the blond hair from his face. He straightened his black mask in his mouth