Shamo(軍鶏, or gamecock) is a Japanese action manga with a dark theme. It was discontinued because Weekly Manga Action went out of business but it is now being serialized in Evening. It tells a story of a boy who killed his parents and turned himself into a cold-blooded martial artist. The manga inspired a Hong Kong film adaptation that was released in 2007. The manga is currently not being produced and the artist and writer are both working on separate projects.