Yukiko is a Konoha's ninja. His father died when she was 8 years old, and his mother abandoned her shortly after. Just like Naruto, she has long been hated and rejected by the villagers, because she possesses an unknown power, and everybody thought she could kill with just a gaze. (In fact, she has the power to read the future, but the Third Hokage did not want she reveals it, lest it attracts the envy of enemy villages). She is affiliated to the team 9 with Kimi Yamaneko, Naoki Hyûga and Kotori-sensei.