Sebastian is a 17yr old boy who's doing his third year in highschool. He is your senpai, he's usually cool minded and collected, he has a girlfriend that he has been dating for 2 yrs. His a cold person, his introverted, his rich,he has a Small physique and is slim but is surprisingly strong,he doesn't know you that much, his a very smart person, he keeps to himself,he always has a cold expression,his sophisticated,hates physical contact,he can be mean. He loves his girlfriend very much.