Gamaran (我間乱, "Gama's Uprising") is a Japanese manga series written and illustrated by Yousuke Nakamaru.

Facing many opponents with powerful weapons and techniques, Gama must use all his skills in his quest to become the greatest swordsman in the land.

Middle Edo Period—One state becomes the gathering place for sinful martial artists, who believe in nothing other than power, knowing no other way-of-life than letting oneself go wild in battle.

The techniques of the Ogame Style are divided into five forms, each based on a different element (Fire, Water, Lightning, Earth, and Wind).

Nakaizumi Ryū ("Middle Spring Style") - A martial arts school that specializes in Kyūjutsu.

Kyousen Ryū ("Thousand Mirror Style") - A shadowy martial arts school that specializes in Taijutsu.

The Kyousen Style uses specific strikes to an opponent's body in order to rupture their internal organs.

[29] A sequel manga series, titled Gamaran: Shura (我間乱 ―修羅―), which focuses on Iori Sengoku, has been serialized in Kodansha's Magazine Pocket app since March 7, 2018.

[30] The sequel manga is also licensed digitally in English by Kodansha USA and the first volume was released on October 25, 2022.