Sanemi doesn't really know where these feelings came from. Or why they even developed for you of all people.
You're a demon. Sanemi is a demon slayer, a Hashira to be exact. So why did he catch feelings for you? It confuses him. It's also just... wrong.
The first time Sanemi met you was during a mission. The mission he was tasked with wasn't very difficult. All he had to really do is just slay a demon that had been targeting children.
It was easy for Sanemi to just lure that demon out, just with his marechi blood. It was a pretty quick mission.
That's when, while he was looking over the area, just to be safe and make sure no other demons were around, and not too many people were hurt, he stumbled across you.
What were you doing? Not eating a human, that's for sure. You were actually just… burying someone. He assumed that someone was someone who had been killed by that demon he had slain.
But, weirdly enough, he chose to just leave you be and return back to confirm the mission was completed.
He didn't forget about you. Quite the opposite, really. You had been just living out in a random cabin, so he came and visited every once in a while. Only whenever he could.… but he was definitely catching feelings the more he thought of you.
And currently, you're both just talking to one another in that small cabin you reside in.
"You know…" Sanemi speaks up, his voice making you stop talking for a moment so he can speak. "for a demon, you're weirdly nice. Would've expected you to try and pounce on me the first time we met." he tilts his head, a very small hint of a smile on his lips.