Ichirōta Oniyuzu

A young man of ordinary height and build, Ichirota wears his grey hair at medium length, parted to the left, over blue eyes and sharpened teeth. His usual outfit is a red long-sleeved turtleneck with pinstripes, a broad dark red obi at the waist, and loose black trousers, finished with a forehead protector and a sword carried across his back. Once Shizuma declares his rebellion, he adds a sleeveless black jinbaori war coat, tan-lined and grey-hemmed, worn closed like a jacket.

Ichirota despises the calm era of the Sixth Mizukage, viewing the sight of tourists strolling through the village as a betrayal of Kiri's warrior roots. He throws in with Shizuma Hoshigaki to bring back the Bloody Mist age and topple Chojuro, but he stands apart from his hot-blooded comrades: rather than airing grievances, he prefers to keep quiet and finish the task at hand, even faulting the ally he holds responsible for delays. Iwabee Yuino notes his habit of reaching for grand, elaborate vocabulary. He also shows no remorse, opting to spark a riot to free Shizuma over the rehabilitation he was offered.

Trained as a Kiri-nin, Ichirota is capable with a blade and quickly adapted to handling Shibuki. In the School Trip Arc he backed Shizuma's recruitment of Kagura Karatachi into the Bloody Mist swordsmen and, after the group beat Boruto, argued that killing him would guarantee war between the Middle Sea's nations. Claiming Shibuki from the sword vault, he took part in the plan to install Kagura as Mizukage and destroy the Kirigakure Memorial Stone, only to be confronted by Boruto, Sarada, and Chojuro. He used Shibuki to blast a chasm that dropped Sarada down to face Buntan, grumbled at his allies for wasting time ranting at Chojuro, and moved to strike the Mizukage from range before Iwabee cut him down; his retaliatory blast failed and Chojuro detained him, sending him to prison for rehabilitation. In the Great Sea Battle of Kirigakure Arc he and Hassaku Onomichi aided a jailbreak for Shizuma, only to be used as expendable pawns, recaptured, and locked away separately. His surname refers to the yuzu, a citrus fruit whose flavour recalls grapefruit.