Darkness-Induced Audience Apathy: The story is well-told and the characters believeable, though as death is a presence over the entire series (and according to Yuu Watase, Life And Death is the theme of the manga), there are some scenes that can come across as being slapped together for drama but ultimately don't leave as much of an impact as they could. Case in point, Hagus' death feels like a cop-out to age up Tegu
They Wasted a Perfectly Good Character: Shigi. He plays a larger role as part of the Kutou army and is the one who kills Tomite, but what little of his past is revealed makes him all the more interesting. Shigi's hometown was attacked by bandits, his family killed and he was left to starve, going so far as to eat animal bones simply to survive. Eventually he's caught and is made an eunuch, with implications that he was raped before or after the procedure, before he was finally found by Lord Hakei and offered a position of authority and a good life.