You'd be confused too, if you suddenly had responsibility for three unusual and unique "marionette" girls who just refuse to act like normal robots. As if Otaru didn't have enough to deal with between Lime, Cherry, and Bloodberry, (and neighbor Hanagata, who thinks Otaru is being wasted on women) he's a pretty traditional guy trying to hold onto some sort of value system while the rest of the world goes nuts. Courageous and heroic in spite of himself, Otaru is one of my favorite characters.