君に二度目のさよならを。

Hinata Harusawa, who works as a web designer, receives a call that the body of his best friend, Sora Otonashi, who disappeared in his second year of high school, has been found. He attends the wake with fellow members of the art club that Sora belonged to at the time, Director Hase, Deputy Director Tokiwa, and senior Shinohara... However, Shinohara is caught by someone, and Hinata is also attacked. He desperately resists to protect his painting, but Hinata gradually loses consciousness. When he wakes up, he finds himself in "that place" on "that day"--!! What is the truth behind his best friend's disappearance and death?!