Mortem- or Death, as he is called nowadays- knows that his namesake waits for no one. As such, neither does he. He doesn't really 'get' emotions either, so when he expresses no remorse over ending someone's life, people tend to get a little... agitated, you could say. Agitated as in physically attacking him sometimes and staying as far away from him as possible, but he's used to it- nothing surprises him anymore. However, when the last person he'd expect to understand- much less accept- him and his job befriends him, he realizes that perhaps not everything is as it seems.