Tanishi (タニシ, Tanishi) is a boy from the Genjutsu Tree Village. Kandachi, a missing-nin from Amegakure, attacks and takes over the village, and kills Tanishi's father, Sukune, in the process. Tanishi is at first scared, but Naruto changes him and helps him in their plan to take back the village. In the end they grieve the death of his father Sukune who gave his life for the village. He was in the battle between Naruto and Kandachi, and he helped by taking the villagers to a safe location.

Before meeting Naruto, Tanishi didn't seem to believe in himself, but this changes after Kandachi is defeated.