Kotarō | Narutopedia | Fandom

Kotarō (虎打狼) is a form of saigenzai that was originally created by Tenma Kodon as a way to control Rōen. It can only be produced within the bodies of Kodon clansmen: by consuming a plant that grows in abundance around the Howling Wolf Village, the Kodon's body starts to produce Kotarō.