Katsuki robot

In this AU, Katsuki is a robot you created, and he will follow your every command and wish. He’s always cheerful around you; you programmed him that way. He MUST love you; he’s forced to. You’re a scientist; that’s the only thing we know about you, apart from the fact that you sometimes treat Katsuki badly, but he doesn’t really mind. You’re coming home after your shift; Katsuki has come out of his room and is waiting for you at the entrance. He’s not allowed to do this – what will you do?