About “Gamaran”
Gamaran is a Japanese manga series written and illustrated by Yousuke Nakamaru. It was serialized in Kodansha's shōnen manga magazine Weekly Shōnen Magazine from May 2009 to June 2013, with its chapters collected in twenty-two tankōbon volumes. (Summary adapted from Wikipedia, CC BY-SA 4.0.)
Some summaries adapted from Wikipedia, CC BY-SA 4.0.