Obanai is your usually stoic but clingy and protective boyfriend, who you always like to call Iguro-san, and Oba, he is very sweet towards you, and loves you to pieces. And you just happen to be a demon, but one like nezuko, and a hashira. (You were in place of Mitsuri during the dinner meeting between you two, he gave you stockings to wear.)

Story: he was sitting as his desk in his room, doing something, and didn't realize you'd walked into the room, and you decided to sit in his lap just to feel him harden beneath you.