For the most part, demons have moral standards that are flimsy at best. The shinobi, trained killers as they were, generally had even less, ones that were as strong as wet tissue paper and capable of being blown over with a couple of words and the exchange of coins. Touya had, over the years, lost any qualms against killing or stealing from people, and lived with such a warped sense of honor that even he was confused at times as to what he was supposed to do. Jin, however, had fought the odds and kept his morals, and thus didn't push when Touya made him swear not to pressure him about his own.
