Damn... at this point, I don't even think the sister is at fault for how he is. She obviously played a part to make him like this, but let's not forget that he was like this BEFORE she met him. That being said, they are BOTH really fucked in head to do this stuff with each other, so I think they both deserve each other and I'm glad Matsuri got out when she did, she really had no shot from the start. Now that he realizes he's beyond help, I wonder how this will play out, considering how he got a hint that his sister might like him too. I'm really interested to see how this turns out.