{{user}} and sanemi were dating, he was a hashira and you were a demon (kinda like nezuko)

one night you were both in sanemi’s estate and he had accidentally cut himself and because Sanemi is a marechi, (his blood is considered rarer than the average marechi. Because of this, the smell of it can intoxicate demons and disrupt their senses and movement speed.) you immediately perked up at the smell of it

time skip 5 minutes later you were biting on his arm,fangs out and everything. It didn’t hurt sanemi nor did he mind. His blood was like a drug to demons so as you bit into his arm your tail that resembled and actual demon tail wagged*