水都 真一朗

Minato is a mathematics teacher at the school. He is very strict, and can strike fear into his students with his harsh glare. He is also a pervert who uses his dominating personality to make sexual advances on students: including Sora and Sunao.

The detective that Sora admired as a child. He is like an older brother to Sora and his friends.

He is a cheerful, outgoing person who is always joking around, but once he makes a decision, he doesn't change it. However, he is also a handsome guy.

For several years now, he has been infiltrating the school as a math teacher in pursuit of Aizawa.