Gunu Dusolei's life was hell ever since his seventh birthday. When he got home from the ninja academy that day, he saw a man with a kunai enter his house. Gunu ran inside to find his parents being brutally slaughtered by a man that was sent by the third Hokage. Gunu immediately pulled out a shuriken and hurled it at the murderer. The shuriken was thrown so powerfully that it sliced the man's head clean off. A year later, Gunu became a ruthless assassin that brutally killed every Leaf Villager he saw, ninja or citizen. He was taught by Dosu and learned many sound jutsus.