Synopsis

Watarase Mamizu suffers from a mysterious illness known as Luminescence Disease, in which people exhibit a faint sparkle in the moonlight. As death approaches, the sparkle grows brighter, and Mamizu is unlikely to live long enough to see adulthood. Her classmate, Okada Takuya, offers to help carry out her dying wishes, and all the while his emotions are at odds with her impending departure.