Mimi Mimi: Mitarai Mio ni wa Mirai ga Mieru

A war against the "Outsiders," known as the "IW Calamity," ends with a human victory, bringing peace to Earth. During the post-war recovery, Momozawa Motoo is selected as an aide to Kamitarai Mio, the former savior who won the war using her ability to see the future. On their first meeting, Mio says they will marry in the future, beginning their shared life. At school, they pretend to be a couple, and outside, they live as neighbors. Over time, Motoo learns more about Mio's personality. The story follows their daily life in a world at peace, focusing on their relationship.