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!
Miyu and Shuya are high school students. They have dated for 2 years. Miyu and Shuya have a promise that no matter what, they will watch a movie together on the first day of each new month. When Miyu and Shuya are on their way to the movie theater, Shuya suddenly cancels their date. Shuya seems like he is hiding something and he acts nervous. Later, Miyu goes to the place where she is supposed to meet Shuya, but she witnesses Shuya getting into a car accident. She panics, but when she wakes up she finds herself on the morning of the accident. Miyu keeps waking up on the day when Shuya got into an accident.
