The spring she turns sixteen, Takamiya Naho receives a strange, but detailed letter from herself, ten years in the future. At first she thinks the letter is a prank, but then the things written in the letter actually happen, including the arrival of the new transfer student who sits next to her in class, Naruse Kakeru. The letter reads just like her diary entries, down to the same characters. It is not until two weeks later, when Kakeru shows back up at school, that Naho finishes the letter. In the letter, her twenty-seven year old self tells her sixteen-year old self that her biggest regret is that Kakeru is no longer with them in the future, and asks her to watch him closely.

Oneshot story about bumping into each other in the hallways

For normal people, about one unfortunate event occurs in a 1 day period. But for some reason, it's different for Rinko. Unfortunate things seem to pile up one after another. All Rinko wishes for is to find some happiness in her life. With the upcoming New Year's celebration and a date with her best friend, Tatsuyuki, will her hopes and dreams be fulfilled?

While loitering in the park, Shimana Kameko, who intended to run away from home and skipped school, meets a suspicious man in a kimono. This man, who had been locked out of his house, offers Shimana a place to stay. However, he requests she fulfill three conditions in exchange for her tenancy?!