Euthanasia

Set in Augusta, Maine of November 2021, a high school senior named Chris Scuffer grieved the loss of his friend Mike after the school shooting incident happened, made Mike's mom want to rage and got missing. Before Chris graduates, he had met up to the seniors and juniors, including Anne-Marie, a companion to Chris.

The other side set in Tokyo, Japan, Nori is already married to Saki Haruna. He saw his singer's death when he was a child. The Seppuku Cult were an enemy group of Nori & Saki. They were both rescued by 16-year old Itsuki Rei, a young orphaned hero with needles.