Man this is so cute, I can see the domestic violence incoming from a mile away. Seriously her response to everything the dude does is to hit him, staring off into the air? Hit him. Confessing his love? Hit him. Taking a dump? Hit him. Ok that last one didn't happen (at least not in this manga) but she fr only knows how to hit him. Dude seems to stick around though so I guess he likes it.