Kosuke Maruboshi is a genin of Konohagakure and he is known as the 'Eternal Genin ' in the village and also as the 'Konoha's Strongest Genin.' Though being offered the position of jonin countless times he rejected it. He was taught by the different Hokages and has a large amount of knowledge and experience. He is highly capable of survival.
|First Appearance in Anime||Naruto Shippūden Episode #190|
|Voice Actors||Yutaka Nakano(Japanese Dub), Junpei Endo (English Dub)|
|Village||Konohagakure (Village of the Hidden Leaf)|
Due to his reckless actions that cost him the lives of his teammates, Kosuke thought that he was not deserving of the title of a genin. Despite this he trained hard to improve his skills and remained a genin for over fifty years, which earnt him the name as the Eternal Genin. Kosuke served the second, third and fourth Hokage.
He even fought alongside the Legendary Sannin, Konoha's White Fang and the previous gen InoShikaCho. He was only one of the few people who knew that Naruto was Minato's son. He lost one of his legs in battle and replaced it with a prosthetic leg.
Six years after the Nine-Tails attack on Konoha, Kosuke was sent on a mission with Guy to complete a trading of secret scrolls with the Land of Woods to establish an alliance between the two villages. While they were on the mission Guy noticed that this mission was actually to test the trustworthiness of the other village.
Guy was right as the Land of Woods betrayed Konoha after getting the scroll. As Kosuke and Guy were about to lose, Kakashi and Itachi (during their time with Anbu) came as backup to save them and defeated the ninjas of the Land of Woods.
Seven years later he was put on a team with Hayama Shirakumo, Tekuno Kanden and Naruto Uzumaki to guard the borders of the village after Orochimaru and Sunagakure attacked the village. When they were guarding the border they realised that their border was invaded by Iwa ninjas.
Kosuke directly clashed with their leader who mistook him as Konoha’s defense forces. Naruto came back as he couldn't leave his friend alone in battle. Kosuke said that he wouldn't die and now he will let konoha fall and with this defeat the Iwa Ninja.
He was then given a mission to retrieve valuable information from Iwagakure. After getting the information, Kosuke went back to Konoha immediately to give the information but he was trapped. He was then saved by Team Asuma.
Kosuke is known for his calm, collected personality due to his knowledge and expertise. He is seen smiling and hardly lets anything bother him even when he's on a mission. This usually portrays him as a lazy and uncaring person but in reality he is quick to take actions and has expert survival skills. He is usually carefree and can change in an instant to pure seriousness depending on the situation.
He is also quite loyal and believes in the Will of Fire and has a great sense of duty. This can be seen in his willingness to sacrifice himself in order for his comrades to escape and warn the village. He has little value of his own life due to what happened when he was a child and he always puts the village.
Kosuke is an elderly man who had black hair which is now grey and he wore it in a ponytail. He was measured with a sleeveless kemono and a pair of grey pants. He carries work that he uses for multiple things he also carries is a ladle and a sword too. In his younger days, Kosuke had dark hair which was tied in a ponytail and he also wore a blue jacket with a mesh shirt underneath.
Kosuke is very good at taijutsu and a very skilled kenjutsu fighter. He wields a hidden blade that is concealed in this prosthetic left left which he can use to strike with deadly precision. Despite his age he is seen to be very agile and fast.
He uses a unique technique which uses genjutsu and kenjutsu together to confuse the confused and petrify his enemies which makes it easier to strike them down. He also learned the Shuriken Shadow clone technique from the third Hokage which he uses with a lot of proficiency.
He trained under the second Hokage and has a high caliber in water release techniques as he was even able to overpower Earth release. That was despite the fact that Earth is water's weakness. He can also use Earth release techniques.
"When you've been a genin for fifty years as I have, chances are you've worked with many who became great masters."
"There is no single Konoha shinobi who would sacrifice the lives of a genin!"
"You've left behind a fine son, Fourth Hokage."
Kosuke Maruboshi did not only appear in the series but also a movie and video game.
Naruto the Movie: Blood Prison
Kosuke Maruboshi is a playable character in the following video games:
|Game name||Japanese release||English release|
A. Yes, Kosuke is still alive and well in the series.
A. Naruto meets Kosuke in Episode 190.