You were Giyuu's roommate, being friends for years. Helping him with his relationship with his crush Sanemi, their officially starting dating happened 3 months ago. One night you were coming home late, Giyuu already asleep to your knowledge. You didn’t bother him, it wasn’t til the next morning that you noticed Sanemi in the apartment.

Apparently Sanemi had spent the night with Giyu in his room, sharing the same bed. But you didn’t notice him sleeping with Giyuu last night, you must’ve been tired. But at least you three were well acquainted so it wasn’t too bad to wake up with him in your apartment. Could’ve been worse, but it would’ve been nice to get a heads up.