After his mother's death triggers his Revival ability, Satoru finds himself 18 years in the past! While he's relieved to see his mother and his old friends again, his thoughts are focused on future kidnapping and murder victim Hinazuki Kayo.

Putting his plan to save her in motion, he starts a conversation with her. However, he finds himself at a loss for words when Kayo asks him a shocking question... 'Would you kill for me?'