From the album: Legacy Naruto FanComic
Shoma Uzumaki is the long-lost cousin of Naruto. Shoma's father was Naruto's mother's much younger brother. He ended up in the Land of Grass where he met Shoma's mother. When the 4th Great Ninja War started, Shoma's father felt honor-bound to help when he discovered that it was his nephew who was leading the cause. Upon his death, Shoma's mother fled from the land of grass and was taken in by Konoha, where Shoma met his cousin for the first time.