Sayama Umi, a high school girl, is taken in by the Hiroi family while her mother is away for an extended business trip. The Hiroi household includes Shoya, an older figure she has admired for eight years, and Umi's heart beats faster as she looks forward to their long-awaited reunion. However, the Shoya she meets is not at all like the one she remembers...

A subtly shimmering cohabitation tale about reconnecting with altered memories.