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Careful Sensei!V • T • E You are approaching Story Spoilers about Oratorio of the Bygone Time. Please proceed with caution. Some sections of this article may be under construction at the moment. |
Oratorio of the Bygone Time (過ぎ去りし刻のオラトリオ) is the sixth volume of Blue Archive's main story. It is set in Arius Branch School.
Synopsis
Even after the fall of Madame, many students within Arius continue to remain in their school and isolate themselves. This gets the attention of a now reformed Saori, Sensei, and the rest of the Squad, who are ordered to return to their old school and help their former classmates.
Chapter 1: The Invisible Boundary Between Us
The Invisible Boundary Between Us (見えない私たちの境界線) is the first chapter of Volume 6.
Description
Sensei is heading to Arius Satellite School... for a special lesson!
Story
Chapter 2: The Farewell Declared at That Moment
The Farewell Declared at That Moment (あの刻に告げし決別) is the second chapter of Volume 6.
Description
A number of strange incidents occur across Arius Satellite School...What could be behind all of them?
Story
Chapter 3: Ecclesia for the Future Left Behind
Ecclesia for the Future Left Behind (遺された未来のためのエクレシア) is the third chapter of Volume 6.
Description
Subaru is becoming...something new. What will become of the Arius Squad?
Story
Characters
Below are the list of all characters appearing in the volume:
Note: Status refers to the character states in the game when they first debuted in the story. A new playable character related to this volume might change some contents in the story, hence the "Later" remarks for some characters.
| Volume 6 Characters | ||||
| Name | Affliation | Debut Chapter | Status | |
| Sensei | SCHALE | Chapter 1, Episode 1 | NPC | |
| Maia | Nicomedia Troop - Arius[1] | Chapter 1, Episode 1 | NPC | |
| Subaru | Chapter 1, Episode 1 | NPC (later Playable)[2] | ||
| Saori | Arius Squad - Arius | Chapter 1, Episode 4 | Playable | |
| Atsuko | Chapter 1, Episode 4 | Playable | ||
| Misaki | Chapter 1, Episode 4 | Playable | ||
| Hiyori | Chapter 1, Episode 4 | Playable | ||
| Nagisa | Tea Party - Trinity | Chapter 1, Episode 4 | Playable | |
| Mika | Chapter 3, Episode 8 | Playable | ||
| Seia | Chapter 3, Episode 8 | Playable | ||
| Hifumi | Supplementary Lessons Department - Trinity | Chapter 1, Episode 2 | Playable | |
| Koharu | Chapter 1, Episode 2 | Playable | ||
| Azusa | Chapter 1, Episode 2 | Playable | ||
| Hanako | Chapter 1, Episode 2 | Playable | ||
| Suzumi | Vigilante Crew - Trinity | Chapter 1, Episode 2 | Playable | |
| Reisa | Chapter 1, Episode 2 | Playable | ||
| Ui | Library Committee - Trinity | Chapter 1, Episode 2 | Playable | |
| Shimiko | Chapter 1, Episode 2 | Playable | ||
| Yoshimi | After-School Sweets Club - Trinity | Chapter 1, Episode 2 | Playable | |
| Natsu | Chapter 1, Episode 2 | Playable | ||
| Airi | Chapter 1, Episode 2 | Playable | ||
| Kazusa | Chapter 1, Episode 2 | Playable | ||
| Mine | Knights Hospitaller - Trinity | Chapter 1, Episode 2 | Playable | |
| Serina | Chapter 1, Episode 2 | Playable | ||
| Hanae | Chapter 1, Episode 2 | Playable | ||
| Tsurugi | Justice Realization Committee - Trinity | Chapter 1, Episode 2 | Playable | |
| Hasumi | Chapter 1, Episode 2 | Playable | ||
| Mashiro | Chapter 1, Episode 2 | Playable | ||
| Ichika | Chapter 1, Episode 2 | Playable | ||
| Sakurako | Sisterhood - Trinity | Chapter 1, Episode 2 | Playable | |
| Hinata | Chapter 1, Episode 2 | Playable | ||
| Mari | Chapter 1, Episode 2 | Playable | ||
| Sena | Emergency Medicine Club - Gehenna | Chapter 2, Episode 2 | Playable | |
| Hina | Disciplinary Committee - Gehenna | Chapter 3, Episode 7 | Playable | |
| Kotori | Engineering Department - Millennium | Chapter 3, Episode 7 | Playable | |
| Utaha | Chapter 3, Episode 7 | Playable | ||
| Sumire | Gym Training Department - Millennium | Chapter 3, Episode 7 | Playable | |
| Konoka | Public Security Bureau - Valkyrie | Chapter 3, Episode 9 | NPC (later Playable)[3] | |
Trivia
- An oratorio is a musical composition with dramatic or narrative text for choirs, soloists, and orchestra. The oratorio has its origins in Renaissance-era Italy.
- This is the first volume released after Volume F that doesn't have the volume itself as requirement for reading.
- In the fourth episode of Chapter 1, Hiyori says that she and the squad were "kidnapped" for the Octopus Games and the last one standing wins 4.5 million yen, which is a huge reference and shoutout to the series Squid Game.
- Ironically, both Blue Archive and Squid Game are originally from South Korea.
- According to the developer commentary released on May 2026, this volume is not planned to be written earlier, but was produced to "fill the gap" being left due to them scrapping a possible Red Winter arc of EX: Decagrammaton Volume and was done in a rush. That may explain why the volume feels shorter compared to other volumes.
Reference
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