Suwa Daisuke's sister. She is 37 weeks pregnant as the result of an affair with a work colleague. She is a strong-willed woman who has resolved to take care of the child as a single mother and returns from Tokyo to have the baby at her mother's home. Even with her baby's birth imminent, she constantly teases her younger brother, but sometimes her teasing can be all too accurate. She was able to figure out that Hinako has been pregnant before.

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