A hand reaching out from the darkness, is it salvation or...

Minato, a high school boy, quit track and field, the only sport he was good at. It was a reason he could not tell anyone. On his way home, his older brother Ayato, who lives far away, comes to pick him up for some reason. Minato lashes out at Ayato, but Ayato's behavior is somewhat strange...?
男子高校生の湊人は、唯一の特技であった陸上を辞めた。
誰にも言えない理由だった。
帰り道、離れて住んでいる兄・綾人がなぜか湊人を迎えに来る。
綾人に暴言を吐いてしまう湊人だが、綾人の様子はどこかおかしく…？