Gamaran (我間乱, Romanized as GAMARAN in Japan; ; Literally meaning "Between our Turbulent"; ) is a 2009 shōnen manga written and illustrated by Yousuke Nakamaru. The series chronicles the adventures of Gama Kurogane as he competes in the Grand Tournament of Unabara.
Summary[]
"Middle Edo Period -- One state becomes the gathering place for sinful martial artists, who believe in nothing other than power, know no other way of life than letting oneself go wild in battle. That state is the Unabara State, the "Haunt of Demons"..." Naosata Washitzu, the ruler of the powerful state, Unabara, is looking for his successor. He calls upon all 31 of his sons and tells them to search for whoever they believe to be the strongest martial artist of all. Each of their chosen martial artists are then to fight against each other - until only one remains. Whoever is the winner, whoever has the strongest martial artist in the nation by his side, will become his successor... Out in the midst of the mountains is the doujo of "Ogame Ryu" (Giant Tortoise Style). There lives Gama Kurogane, the son of the legendary swordsman, Jinsuke Kurogane, who is believed to have killed 1000 martial artists in Unabara. There, one of the sons of Washitzu Naosata, Naoyoshi Washitzu, arrives in search of the legendary swordsman, only to find that he has been missing for several years. After seeing the battle style of Gama, Naoshi decides to ask Gama to come with him instead. Wanting to become stronger, Gama agrees with his offer, and that marks the beginning of Gama's battle to become the strongest of all.
Gamaran was continuously serialized in the Japanese manga anthology Weekly Shonen Magazine since May 2009, and has been collected in 22 tankōbon volumes.