Keiichi Kuchiki/Otete no Mangetsu

Otete no Mangetsu is the manifested spirit of Keiichi Kuchiki's Zanpakuto. A quiet, silent, honorable assassin, for many years she had a strained relationship of hatred with her master, Keiichi Kuchiki, due to his bloodthirsty and battle hungry nature, until he changed his ways later; after that, the two became extremely close.