After losing his mother, Mizuki plunges into despair until a new transfer student, Misaki, brightens his world. Joining forces in the school library, their bond deepens. However, Misaki's revelation of her limited lifespan propels them into a race against time to fulfill her wishes. As Mizuki strives to grant her every desire, a final hidden truth emerges, testing their fragile love. A tender tale unfolds between the introverted Mizuki and the guileless Misaki, painting a poignant picture of love constrained by fate.