Shirosaki Suiu

Star Sign: Sagittarius
Known as 'Topaz' by his old classmates.
The teacher in charge of the witch course.
He's a carefree but competent guy.
A rough and easygoing person, even in class he tends to go off track.
He may seem insincere, but he's good at taking care of people.
He has almighty magic ability and all the students trust him.
The advisor to the occult club. He talks in Osaka-ben.