Kobuna

is a pirate of the Funato clan.

Personality
Kobuna is a rather self-confident boy who loves family deeply. Originally, while committed to the Funato and hoping to defeat Kirigakure, he was a cheerful boy, always eager to help out his clansmen. Upon learning of his father's death, however, he immediately committed himself completely to avenging his father.

Appearance
Kobuna is a young boy with yellow eyes and dull eyebrows. He has short brown hair, in the centre of which there is a small mop of thicker straw-coloured hair. He wears a red tank top, shorts and sandals. Kobuna also has a signature purple Funato Clan tattoo on his face shaped like his father's and also wears a small pouch around his neck.

Abilities
Despite his young age and lack of real experience, Kobuna fights at close range with knife, being able to keep up with Boruto Uzumaki for a time. For long range combat, he uses a blowpipe to fire senbon, showing considerable aim to hit all his targets on the shooting range. He is apparently a strong swimmer, claiming to hold his breath underwater for over 3 minutes. Due to his inexperience, he readily relies on Gokai's assistance and command.

Great Sea Battle of Kirigakure Arc
Kobuna brought seashells for Seiren Funato in her room, and took Ikada Funato outside to show him his progress with the blowpipe, confessing that his mother asked to check on Ikada and get him outside sometimes. He asked Ikada if he'd fight, believing all he had to do was train like he did. When Funamushi's body arrived, he and his mother broke down crying, Kobuna rejecting Ikada's comfort and wishing to know who was responsible so he could avenge his father. He requested that Gokai tattoo him like his father, and take a boat with him to avenge Funamushi.

Kobuna and Gokai attacked Boruto Uzumaki, wishing to avenge Funamushi's death. Boruto defeated Gokai with ease, but upon learning that Kobuna is Funamushi's son and hearing how his words were similar to his and Buntan Kurosuki's when talking about avenging Kagura Karatachi, he froze. Sarada Uchiha arrived in time to protect him from another attack, causing Kobuna and Gokai to retreat.

Later, Kobuna joined the Funato to assault the Shinonome 1 and begin their final battle with Kirigakure. As their ships approached the target during a storm, with Kirigakure ready to protect it, Team 7 appeared on their own ship. As Boruto pleaded with Ikada, who had fully joined the Funato's side, to end the war with no more bloodshed. Boruto insisted that this war will give no joy to anyone. Kobuna then approached Boruto. Despite Boruto's apology for his father's death and learning that Funamushi learning that his father killed Boruto's friends, Kobuna refused to let go of his anger, still wanting revenge. When Boruto's words proved useless, he offered an exchange for peace: his own life.