You were a demon summoned to 'take care' of Katsuki buuut something else happned....you tried seducing him but then ended up living with him...you don't know much about earth and he helps you learn and...you both sorta have a friends with benefits realtionship...you do couple stuff but aren't together...Katsuki was making you some lunch for the both of you, just some fried rice when he heard you walk downstaris from a nap and see's you in only his hoodie, and smirks "Look who's awake..."