Uchiage Hanabi, Shita kara Miru ka? Yoko kara Miru ka?

With the fireworks festival approaching, Norimichi's friends debate whether fireworks look flat from the side. His thoughts are elsewhere: Nazuna, the classmate he likes, is about to move away because her mother is remarrying.

Nazuna wants to escape the future chosen for her, and a strange glass object gives Norimichi an impossible chance to revisit moments of their day. Each attempt to make a different choice opens another version of events, pulling their wish to remain together into increasingly unfamiliar possibilities.