Th story's main theme is betrayal, with the main plot points being moved by one form of betrayal or another. It ultimately argues against using betrayal as an excuse to commit evil acts. Each character motivated out of revenge for betrayals ultimately suffers dearly in the from of insecurity or lost friendships. Rather, the characters who do not fall for the allure of revenge when betrayed are the ones who find happiness and belonging by the story's end.
The manga is harem, but its obvious who wins from the start. The harem members retain personalities independent of Shinya, so the reader doesn't feel sorry for them when they lose. Mostly.
This manga is weakest in its art. The cast, in particular the male cast, look too similar to echother. This leads to an inability to follow the individual arcs of the main cast, in particular during the middle and end where the story becomes grand fantasy. Its also weak in its fight scenes, where protagonist's mostly win through the power of love and justice rather than gritted training. At one point, this gets tiring.
Messiah-sama is a grand fantasy melodrama that works best with its message. It is weakest with artwork and action. White not great, it nonetheless works well to invest its readers into its story.
7/10.
