A 40-year-old ordinary man, diagnosed with an incurable illness due to years of unhealthy living, is given only a few months to live. In a final act of hope, he meets Uta Yumemi, a dazzling AV idol. Between them blossoms a strange and poignant love story, depicting an unconventional relationship. His lewd past intertwines with her pure existence, giving birth to new emotions. As their feelings deepen, the story follows how their bond evolves during his final days.