Nekome Kozou

Synopsis

Cat-Eyed Boy is a half-human, half-monster child who mostly resembles a human, who therefore cannot live in the demon world. He lives hidden in the shadows of the human world, hated by both demons and humans. Wherever he goes, awful events occur. Humans interact with demons, but for the most part it is the humans that appear to act more evil than the monsters.

Cat-Eyed Boy acts like a Trickster figure, saving the innocent and helping the wicked receive the punishment that fate metes out. The stories are mostly tales of revenge and retribution for the evil acts people do.

The series is broken into 11 individual stories, full of *extremely* grotesque and disturbing images.

From the Viz.com print editions and the Vizmanga.com reader (the latter includes a link to a free preview):

A chilling concoction of dark vignettes dripping with the macabre, the grotesque and the absurd. Hated by humans and demons alike, Cat Eyed Boy dwells in the shadows of the human world. No matter where he goes, terrifying situations involoving humans and demons begins to unfurl. Revenge! Obsession! Retribution! Our first volume contains four stories and the first part of a fifth and longer story.

From Kazuo Umezu, the undisputed master of Japanese horror manga and creator of The Drifting Classroom, we bring a new morbid feast to the table… Cat Eyed Boy.

Synopsis & details from MangaUpdates