Fall Oblige
Hidan no Aria Volume 12 Cover
Volume Title Fall Oblige
Release Date May 24, 2012
ISBN-13 978-4-8401-4579-4
Number of Pages 261
Cover Character/s Reki with "Dragunov" SVD Sniper Rifle
Volume Navigation
Volume 11
Volume 13

Fall Oblige is the twelfth volume of the Hidan no Aria novel series released on May 24, 2012. This novel contains the Normal Life arc.

Summary Edit


  • 1st Ammo: As if into Thin Air - Like Vanish
  • 2nd Ammo: Kinji, An Ordinary Person
  • 3rd Ammo: Moe Mochizuki
  • 4th Ammo: Kikuyo Kagataka
  • 5th Ammo: Enlightening Emptiness


Illustration Edit

Trivia Edit

  • Kinji Tohyama succeeds in his goal from Volume 1 of transferring out of Butei High.
  • Oblige refers to being bound to an action due to a law or rule. In this case it has to do with Reki's oath to Kinji to always be with him.
  • Moe is symbolized by a dog and Reki a wolf.
  • There are two dichotomy references within the volume where Kinji struggling where he belongs:
    • A wolf (Reki) and dog (Moe) representing the difference between Butei life and normal life.
    • Kikuyo and Moe representing the difference between the underground life and normal life.

Navigation Edit

Hidan no Aria Series
Hidan no Aria AA
AA Novel