From the original story by Yoru Sumino.

With no interest in others, a high schooler spends all of his time reading books - this is "me." One day, I comes across a book, titled "Living With Dying." It turns out to be a secret journal kept by Sakura Yamauchi, who is a popular girl in class with a genuine personality. Diagnosed with a pancreatic illness, the diary notes about her limited time left. Sakura, who lives with a secret illness, and "me," who keeps her secret. --- Their relationship doesn't have a name yet.