Kurozakuro - Natsume, Yoshinori

This is the story of a wuss named Mikito Sakurai who one day swallows the creation of a creature called Zakuro and becomes an "oni," a superhuman creature with a taste for human flesh. As Mikito is horrified by this change in his once gentle nature, he decides to leave on a journey with an oni-hunter in order to discover a way to turn back to normal.

Kurozakuro was published in English by VIZ Media from November 9, 2010 to November 8, 2011.