39-year-old single milf Yuki Matsuura is at a breaking point, both financially and emotionally. Though she's serious about marriage, she finds herself torn between two men, unable to choose either. Her complicated adult relationship suddenly gets exposed to her nephew, Koichi. Shocked and flustered, Yuki tries to silence him, but her body has already begun to react... A poignant story intertwining the allure of a mature woman and raw human drama unfolds.