The main character is the spawn of the devil, but has a good heart. His body is made up of prosthetics. The more he kills monsters the more his body transforms into that of a human. He is blind but he can see wickedness in people and things. The more human he becomes the more "wicked" he becomes. The transition from emotionless to humane is quite jarring, with awkward and inappropriate reactions, awkward laughs, nonsensical actions.
It is visually sub-par compared to the studio's usual standards. The kid that is travelling around with the MC has occasionally over-detailed "meme"/gif tier reactions but usually the characters lack detail and look quite similar to one another. The fighting scenes are rather static, and the best you will get is in the first episode.
