He's letting the daughter get bullied so she can see how horrible her dad was to him and that will turn her against the dad which will destroy him because she's the only thing he seems to truly love.
@NyanNyan you act like it's the same. Its not like he got hugged because he was aware she liked him still and its not like he doesn't know she's having a hard time. That and shizuka being a scumbag are to very different things.