Sayonara no Moment

Shunya is troubled by the memory of his childhood friend Ryousuke, who died in an accident. A high school student named Tsukasa suddenly appears, claiming to be Ryousuke. It turns out that when Ryousuke tried to stop someone from committing suicide, his consciousness ended up inside Tsukasa. The three—Shunya, Tsukasa, and the spirit of Ryousuke—are bound by an unusual connection, living together in an unfamiliar shared existence. Tsukasa allows Ryousuke to use his body so Shunya can interact with him again. Though they seem destined to remain together indefinitely, uncertainties remain.