Asuka Miyazaki miraculously returned from the mysterious, otherworldly “Kisaragi Station” three years ago. Yet, she still looks as if she’s from twenty years in the past, drawing suspicion and isolation. When she meets a determined documentary director, she resolves to save Haruna Tsutsumi—who once risked her life for her—and others still trapped there. Boarding the train again, Asuka reunites with Haruna, unchanged from three years before, and steps back into Kisaragi Station.
The protagonist, Shippei Iida, moves with his mother to the remote island of Origoshima. He transfers to the island's only high school, Origoshima High School (nicknamed "Oriko"). However, shortly after his transfer, it's announced that Oriko will be merged with a regular mainland school. Naturally shy and with few friends, Shippei is touched by the warmth of the islanders and his fellow students. Wanting to create a final memory at the school, he proposes that all the students perform a choral song together. But this very choir becomes the spark that drives a wedge between his friends' hearts…
Madoka Kamei, the top delinquent at Kōō High, is stuck in a rut—failing school, and out of the game when it comes to both love and fights. That changes when his rival, Mitsuru Satō from Shiraiwa High, suddenly appears—not to brawl, but to announce he’s moving into the apartment above Madoka’s grandma’s candy shop. The unexpected closeness between the two stirs up chaos. Madoka tries to bridge the gap with his usual big-brother charm, but Mitsuru’s true intentions remain a mystery…