A Soul Reaper and lieutenant of Squad 12 of the Thirteen Court Guard Squads. Her real name is Nemuri No. 7. Taciturn and emotionless, she obeys Mayuri Kurotsuchi. While appearing delicate at first glance, her physical aptitude is actually quite high.
Her relationship with Mayuri is that of father and child, but to onlookers unfamiliar with the two, it must appear strange indeed. When Isaac gave her the nickname of Yomu, she seemed to be somewhat perplexed.
