Volume 21 - Rigorous Suspect

Rigorous Suspect is the twenty-first volume of the Hidan no Aria novel series released on August 25, 2015. This novel concludes the Scarlet Blazing Goddess arc and storyline. The novel also acts as a transition to the next phase of the story.

Chapters

 * 1st Ammo
 * 2nd Ammo
 * 3rd Ammo
 * 4th Ammo
 * 5th Ammo
 * 6th Ammo
 * Go For The NEXT!!!!

Trivia

 * Scarlet Blazing Goddess is defeated and is sent back into space.
 * This novel is similar to Volume 5 in how they both conclude a big part of the story and acts as a transition to the next phase.
 * Moe Mochizuki and Kikuyo Kagataka return.
 * Moe and Kikuyo have not had a color illustration since Volume 12.
 * Kanae Kanzaki is finally freed from prison.
 * Raika Hino from the Hidan no Aria AA (Series) makes an appearance.