Responses
Regardless of the fact that he didn't kill anyone, he became someone capable of it. He would have murdered the husband if the lady didn't already and he was going to stab some random guy for Sword. He may be better than Sword but he wasn't innocent or guiltless.
So I know that Sen didn't actually commit any crimes but isn't it terrible that we end up rooting for swordfish and other people who committed terrible crimes to find love? Yaoi is so manipulative.