Yomei Ichinen no Kimi ga Boku ni Nokoshite Kureta Mono

Mizuki has been depressed after his mother’s death. One day, Misaki, an off-season transfer student, arrives. Misaki joins the library comittee and she helps Mizuki at the library after school. As they grow closer, Misaki suddenly reveals that her life expectancy is short.

“Before I die, I want you to help me with everything I want to do.”

Mizuki makes every effort, for her sake, but Misaki still has one more hidden secret. The shy Mizuki and the innocent Misaki. A pure love story with a time limit.

(Source: Novema, translated)