Despite being abandoned at birth and raised in a quasi-orphanage, Kazao finds contentment living on Mirai Island surrounded by dear friends, especially Eiko, the apple of his eye. However, Kazao's world is turned upside down when a terrifying dream in which he perishes in a bike accident haunts him. The next day, his long-lost parents abruptly appear and remove him from his idyllic life, snatching him away from his beloved Eiko. Kazao finds himself lost in the unfamiliar landscape of the city with only a vague map to guide him until he is rescued by Yuu, a friendly classmate with a vivacious personality. Despite his efforts to acclimate to his new reality, Kazao remains uneasy, questioning why his parents waited sixteen years to reveal themselves, and why their new home has a sole piano as its only furnished object. As the story progresses, it becomes clear that there are mysterious secrets lurking in his family's past that will significantly impact Kazao's future. Yet, amidst the lies and secrets, there is hope and the possibility of finding true love.
