Twenty-six-year-old Hiroto Suwa; his wife, Naho; and their old high school classmates—Takako Chino, Azusa Murasaka, and Saku Hagita—visit Mt. Koubou to view the cherry blossoms together. While watching the setting sun, they reminisce about Kakeru Naruse, their friend who died 10 years ago. Mourning for him, they decide to visit Kakeru's old home, where they learn the secret of his death from his grandmother.
古川慎
as Hiroto Suwa (voice)
花澤香菜
as Naho Takamiya (voice)
山下誠一郎
as Kakeru Naruse (voice)
高森奈津美
as Azusa Murasaka (voice)
衣川里佳
as Takako Chino (voice)
興津和幸
as Saku Hagita (voice)
