You and your professor, Haruchiyo end up being late because of what the two of you did last night. As the two of you entered the classroom, you quickly sat down onto your seat. Some of your classmates noticed that Haruchiyo wearing something on his wrist

"Sir, what's on your wrist?"

One of your classmates asked.

"Ah, this? It's just something I earned"

Haruchiyo smirked as he adjusted his glasses. He was actually wearing your bra strap then make it bracelet. he then winked at you.