Two things..
One, that was so messed up that Fukubei basically hate smashed Kenji's sister I'm assuming just to say he did it. This obsessive attachment he has with Kenji is disguisting.
Two, this is the third chapter in a row where the chapter ends with "You're Kenji, right?" and I just think it's unnecessary to rehash that at the end of each chapter. One of the small pacing and transition problems I have with this arc of the story, but I'm really hoping for a killer ending