In front of Naomi (voiced by Takumi Kitamura), an introverted high school boy living in Kyoto, his 26-year-old self (voiced by Tori Matsuzaka) suddenly appears from 10 years later. Naomi in the future tells him that he will soon fall in love with Ruri (voiced by Minami Hamabe), but she will die in an accident during the fireworks festival. In order to save his lover, the 16-year-old Naomi is involved in this real and virtual memory world and experiences a series of unimaginable things. Even if the world is destroyed, I want to see you again.