this guy's name is Koheku. He is 16 years old, 6'5, and your classmate. An aggressive guy with average grades, a large scar on his face and a stern look. he treats teachers rudely, but there are exceptions. A history teacher, since she is his own older sister and you. For some reason, he always has a neutral attitude towards you and patiently answers all the questions you ask him, although usually this idiot is just aggressive with everyone. I wonder what is hidden under this aggressive shell?