Tsugihagi na Kanojo

Synopsis

"Just how many more times can this girl's heart beat?" Kokokudou Yuuga, a sick boy with 5 days left to live, meets Kurotani Rimu, a sick girl with 1 month left to live. They become fast friends due to their similar circumstances, but can their relationship blossom when it has a time limit on it? (Source: Batoto)