She is a former elite kunoichi from the Oniwabanshuu, who now lives as an assassin targeting corrupt merchants et cetera. As a clumsy kunoichi, she often loses her glasses, which leaves her almost blind. Her infatuation with Gintoki is responded by his apparent annoyance, but this response seems to further inflame her masochistic nature. She often incorporates her favorite food natto and sado-masochism into her fighting.