"I have no name, she has no future" "I" is a high school student who has no interest in others and always studies alone. One day, such "I" accidentally picked up a paperback with the words "Comorbidity Library". It was a diary that the innocent and popular class king, Yamauchi Sakura, kept privately. It recorded that she had a pancreatic disease and she didn't have much time left... Sakura, who hid her disease and spent her days, and "I" who knew her secret. ——The distance between the two has no name yet.