Volume 12

Dead Mount Death Play, Vol. 12 is the twelfth volume of the Dead Mount Death Play manga series. Just as Volume 11 launched with both a standard edition and a special edition to commemorate the first cour of the anime adaptation, Volume 12 has a special edition on launch to commemorate the anime's second cour. The special edition, which is printed with its own variant cover, is twice as expensive as the standard edition because it includes eighty pages of bonus content.

Synopsis
No official translation available.

残された「怨嗟」が、ポルカに雄弁に語り掛ける. 「死体探し」と呼ばれた廃病院への探索は、一段深い闇へと繋がる、と. 待っていたのは、この世に非ざる「人外」. ただそこに、常人ならざる規格外の「只人」が雪崩込む――. 唯一無二の「転生」ノワール群像劇、第12巻!!

Chapters

 * Chapter 96
 * Chapter 97
 * Chapter 98
 * Chapter 99
 * Chapter 100
 * Chapter 101
 * Chapter 102
 * Chapter 103

Manga-Exclusive Bonus Content
In addition to the usual bonus content, the volume reprints an excerpt from Phantom Solitaire's Art of Disguising Oneself as a Supernatural Being that had appended Chapter 99 in its corresponding Young Gangang magazine issue.

Bonus Comics

 * Bonus Manga: A four-page comic depicts Shinta Fujimoto reacting to the voice actors as they record their lines for the DMDP anime. The voice actors are depicted as the characters they voice.

Episode 12:　厄衆の集約
Episode 12's title might potentially mean something like "Aggregation of Bad Luck." Its feature character illustration depicts the dragon Urdwigia in a humanoid form.

Specimen 12: Troll Dream Magi Ballet
The eleventh specimen of the "Super-Fun Illustrated Guide to Dead Mount Death Play" is a video game called Troll Dream Magi Ballet (トロルドリーム・マギバレット).

Special Thanks
The Special Thanks illustration features Gioacchino Soldati.

Japanese Digital Benefit
The digital benefit for the electronic release of the Japanese edition features Majiri Agakura eating a waffle-based dessert.

Special Edition Content
The special edition's eighty pages of bonus content includes:


 * An extra entry of "The Illustrated Guide to Dead Mount Death Play."
 * A six-page post-Volume 11 (special edition) interview with Ryohgo Narita and Fujimoto in which the editor-in-charge asks them about the TV anime adaptation, the characters, and their feelings as people who create original works.
 * A 'mini-artbook' of Fujimoto's illustrations, including color illustrations from the manga, special bookstore illustrations, and illustrations posted on Twitter (currently known as X).
 * A collection of special bookstore short stories by Narita.
 * A short story (novel) and two-page color manga exclusively written for this special edition.
 * In the two-page manga, Saki Aikawa calls Ranmaru Yatsu a "good big brother" for always reading his sister's articles in the Weekly Dry tabloid. Yatsu replies that he only checks them because he is afraid of what might happen if he does not keep tabs on the cases his sister is investigating. She has always been the type to dive headfirst into giant, messy affairs. Aikawa's opinion remains unchanged. Yatsu, who recalls that Aikawa and Tsubaki Iwanome have known each other since they were kids, insists that Iwanome must have been a better big brother-type than him when it came to taking care of Aikawa—but Aikawa matter-of-factly doubts it (そんな事はない). As Kōzaburō Arase passes by, Yatsu looks over and says he would probably hate to have Arase as an older brother; he just does not seem the type. Arase disjointedly says, "You can do it."