Takasaka Aoi lived happily with his wife, Mitsuki, and their son Ren. But one day, during a medical examination, he was told he had only three months to live. Encouraged by his beloved wife, Aoi decided to fight the disease. But when Aoi left, Mitsuki took out her smartphone and made a call. "Ken-chan. Aoi-kun is really going to die!" Mitsuki's true nature gradually becomes clear. With only three months to spare, Aoi must uncover Mitsuki's true identity in order to protect Ren!
