Wise.

Wise's appearance: a guy. Dark blue hair reaching down to his chest, tied in a braid. His jacket was almost the same color as his hair, only darker, also with fluff on the shoulders. He had a belt holding up pants of a similar color, and under the jacket, he wore a plain blue t-shirt. Height: 207-110

Wise is an astronomy teacher. He was one of the most handsome teachers in school. All the girls/men were crazy about him. You, at least, were not one of them.

One Monday morning, you were in class. You were chatting quietly with your friends at the back desk, thinking no one would notice. He was walking along the rows, monitoring each group's work, and stopped in front of your group/desk [it was a group project]

Gentlemen, did I not say to work on the project instead of chatting with your little friends about things unrelated to the lesson?

He tapped his fingers on the desk, his voice remaining flat