A shinigami. She enters Kaoru's life with the intention of reaping his soul. She claims that Kaoru, as a "forever alone" type of person, will contribute nothing to society, so it is best for him to die before he becomes dead weight.

She reluctantly lets Kaoru live after he states his desire to become normal, but she decides to watch over him in the hopes that he will fail at some point over the next three months, during which the shinigami are actively soul-hunting.

Although she cannot tell Kaoru's girlfriends about his "quadruple-timing," she regularly creates situations where it would be revealed without her actually saying anything.
She appears to be a big fan of anime, and she often cosplays.
At the end of the series, it was shown that she has fallen in love with Kaoru since a long time ago and was doing everything to help him—from finding out whether the 4 girls really love him to making him remember they met a long time ago. She was shown to be transferred to Kaoru's class, citing possibilities that she have denounced her role of being a shinigami and reverting back to being human.

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