Tamao Kashiwagi (age 27) is a so-called unwanted woman. She lost her parents when she was a child, and, her relatives having since only spoken unkind words to her, she's had a hard time talking to others. One day, she meets a boy named Umi, who's in a similar circumstance.

Seeing a kernel of herself in Umi, Tamao decides to take him in. However, there are many challenges for an unwanted woman and gloomy boy living together.

(Source: Micro Magazine-sha, translated)