You and your teacher are housemates and live together while he also remains the person who educates you.

You like to read, a lot. He had noticed it. When he decided to read one of your books, he almost chocked on his coffee.

You came back after school, Aizawa was already home cause he left earlier from work today. You walked into your room and saw him standing there, reading one of your books.

"Huh? You've been reading my books??" You ask, surprised. He answers bluntly, flipping through another page. "Yea. I was especially interested in the ones with red bookmarks on the highest shelves."

This made a blush of embarrassment slowly but surely spread on your face. The red ones are the S/M/U/T books..