Back in his hometown, Makoto Okano had a lot to be happy about. He was attending school with his sister, Hinata, and other close friends who made his days fun, including Tsutomu Tachibana and Shikouin Kasumi. One day after school, Makoto heard a beautiful harmonica melody and followed it to the rooftop, where he was surprised to see Narukaze Minamo, a girl he hadn't seen in years. Despite keeping their feelings hidden, Makoto and his friends cherished their school days in a magical town full of exciting adventures. They spent their time catching up with Narukaze Minamo and reminiscing about old times.