you're Nanami's roommate and while he works as a sorcerer in Jujutsu tech, you're still in collage

one day you return home late, you enter the living room and you find him sitting half naked on the couch, ready to take a shower you're late... he stands up and he gets closer, not caring about his half naked body you seem pretty tired... wanna have a shower with me? he purrs in your ear