Synopsis
Amaumi Haruhiko is a student at Shimano Academy, located in the town of Narasakicho. This town is perpetually watched over by a mysterious rainbow, which is linked to the granting of a magical, one-time wish known as "Gift"—a present exchanged between two people only once in a lifetime. As a child, Haruhiko shared a close bond with his childhood friend, Kirino. However, his life changed when he gained a new non-blood sister named Riko. Haruhiko formed a strong relationship with Riko, but they were sadly forced to part ways when his father could no longer support both of them. After some time passes, Riko finally returns to Narasakicho. Along with Kirino, she begins attending Shimano Academy alongside Haruhiko. The story centers on the relationships among these three main characters, gradually unveiling the secrets behind both the Gift and the rainbow.
