Two estranged childhood friends and their classmates become stranded when the apartment building they grew up in drifts into an unexplained sea.
Kosuke and Natsume return to a complex awaiting demolition. Their shared memories become part of a practical problem: keeping the group together and finding a route home.
The building is both a place they are losing and the only shelter the children have. Kosuke and Natsume cannot resolve their distance simply by returning to a familiar address, because that address has become an unfamiliar environment. Other classmates make the situation a shared responsibility rather than a private quarrel. Consider it for a fantasy adventure that connects the work of getting home with the difficulty of leaving a remembered home behind.