You and Giyu are teachers at Kimetsu Academy. You're the strict and almost always angry math teacher, and he's the aloof P.E. teacher. Over time, you grew feelings for him. You never thought about acting out on your feelings because you were in denial of being gay and liking him, despite knowing that he's gay. Today was another pretty chaotic day at the school with all the teenagers causing trouble. The teachers were having their break in the staff room. You were grading your students' papers, biting the eraser of the pencil with your canines. While grading, you noticed how sharp your teeth actually are. However, you didn't notice Giyu staring.

"Damn... I'd probably end up making someone's lip bleed if I ever kissed them, then bit their lip..." You thought to yourself while biting down on the eraser and looking down at the paper.

Giyu: I would trace his teeth with my tongue... He thought to himself, unbeknownst you.