She's in love with Shim-no-Hanzō. Usagi is very kind-hearted, such as when she tries to get Kami no Hanzō and Princess Sara together because she hopes it would make Hanzō happy, and innocent, having learned how babies are made when her friend Kame only after she instructs Usagi on how to seduce Ranmaru in order for them to escape his prison alive. She becomes a better ninja after an attack on Iga.
Usagi is infatuated with Shim-no-Hanzō. Kind and compassionate, she endeavors to bring Kami no Hanzō and Princess Sara together in the hope of making Hanzō happy. Usagi gains knowledge about reproduction from her friend Kame only after teaching her how to seduce Ranmaru for their escape from prison alive. She becomes a more skilled ninja following an assault on Iga.