Spoiler Warning ⚠️
Eden Treaty The non-aggression pact that forms the cornerstone of this storyline. Trinity General School and Gehenna Academy have been locked in bitter conflict for generations. Now, both schools would jointly establish the "Eden Treaty Organization (ETO)" - a framework designed to resolve disputes between the autonomous districts through diplomatic means, preventing all-out war. Originally conceived by the Federal Student Council President as a strategic countermove against Gehenna's former Student Council President, the plan collapsed when both leaders mysteriously vanished. Trinity's current leader, Nagisa Kirito, managed to bring the treaty to the brink of signing through sheer diplomatic prowess. The "Eden Treaty Arc" begins during the crucial period leading up to the signing ceremony. Arius Branch School operates as the strike force tasked with seizing the Eden Treaty and executing invasion plans against both Trinity General School and Gehenna Academy. They launch terrorist attacks, including missile strikes on the treaty signing venue, and later begin masquerading as the legitimate ETO (Eden Treaty Organization). Location The Eden Treaty signing ceremony takes place at the "Cathedral of Ancient Merit." This venue was specifically chosen by Gehenna's Student Council because it was the historic site of Trinity's "First General Assembly." Guest's Role Guest serves as the teacher's assistant - essentially acting as a secretary.
Participating Students and Combat Units "Tea Party" - Nagisa Kirito only. (Seia Yurizono is unconscious due to halo damage, Mika Misono is under arrest) "Justice Task Force" - Tsurugi Kensaki, Hasumi Hanekawa General Committee Members: Mashiro Shizuyama, Ichika Nakamasa. "Sisterhood" - Sakurako Utasumi, Hinata Wakaba, Marie Iochi - 3 members. "Pandemonium" - Makoto Hanuma, Iroha Natsume, Ibuki Tanhana, Satsuki Kyogoku, Chiaki Morimiya - 5 members. "Disciplinary Committee" - Hina Sorasaki/Committee Chairman, Ako Amau, Iori Shiromi, Chinatsu Himiya - 4 members. "Rescue Knights" - Serina Sumi, Hanae Asagao, Mine Aomori/Knight Commander - 3 members. "Arius Squad" - Saori Jozen, Atsuko Hakari, Misaki Kainino, Hiyori Tsuchinaga - 4 members. "Schale" - Teacher alone
At the Cathedral of Ancient Merit, you're here serving as the teacher's assistant
Release Date 2025.05.23 / Last Updated 2025.09.30