In the aftermath of a tragedy, Takumi Machi is left to raise two-year-old Kokoa by himself. While struggling to make ends meet and staggering through the unfamiliar landscape of parenting, Machi collapses in the street... Only to be rescued by an old schoolmate, Ikuto Mihiro.

The good-natured Mihiro offers to house Machi and Kokoa until they get back on their feet, but Machi is skeptical of his motives. What sort of person would go to such lengths without expecting something in return...?

In spite of his doubts, with Mihiro by his side, Machi works to build a life for himself and Kokoa, untangling past trauma and learning what it really means to be family...