People felt nostalgic and awe in the city of Kazenone. This was the hometown of Okano Makoto and his younger sister, Hinata, and they returned to search for their missing mother. The duo was warmly greeted by their friends and childhood acquaintances. Makoto soon discovered something significant during his interactions with them. With the sweet melody of a harmonica and heartfelt emotions, an enchanting story unfolded in the enigmatic city.