Yomio is Yomi's self from the parallel universe. He first appears in Yomi's note in the 10th manga in the extra chapter ('Boys and Girls') instead of the female Yomi.

He later appears in some other notes and short-sketches (in the end of manga's), and went on to appear on Chapter covers and colored arts at the beginning of manga.

The strange thing is, compared to his female side he has a lower abdomen.

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