I love it for many reasons, one of them is the psychological part. We learn a lot about people with anger issues and how they face their past and mistakes. You really see how traumatic it can be for them when they realize what they've done. Of course, i'm not saying this to forgive an aggressive behaviour, on the contrary I think this character it's a piece of shit, but he knows it and wants to be a better him. He ends up letting go of his possessive behaviour to actually find a suitable partner who loves him. Well, the other reasons are quite simple, I just love Ogeretsu Tanaka, their manga always has an amazing storyline and art.
Hadakeru Kaibutsu