Kobuna

is Funamushi's son and a young pirate of the Funato clan.

Personality
Kobuna is a rather self-confident boy who loved his father dearly, immediately deciding to avenge his father upon learning of his death.

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 and also wears a seashell amulet 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. Due to his inexperience, he readily relies on Gokai's assistance and command.

Great Sea Battle of Kirigakure Arc
Kobuna and Gokai attacked Boruto, 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's when talking about avenging Kagura, he froze. Sarada arrived in time to protect from another attack, causing Kobuna and Gokai to retreat.