"Dark Matter" (未元物質 (ダークマター) Dāku Matā?, lit. "Unknown Matter") is the fifth episode of the third season of the Toaru Majutsu no Index anime series. It was broadcast on November 3rd 2018, and was directed by Kobayashi Takashi, was storyboard by Ochi Kojin, and the script written by Kingetsu Ryunosuke.


Adapted FromEdit

Major EventsEdit

  • Operatives of MEMBER clash with Accelerator and Kakine Teitoku, and are quickly defeated.
  • BLOCK attempt to take advantage of the loss of communications with the Hikoboshi II and a security rotation interval to get 5000 external mercenaries into the city. Due to the intervention of Etzali, the alarm is raised and the majority of their mercenaries are decimated by a trio of HsAFH-11s.
  • The survivors attempt a raid on the Reformatory, targeting Move Point's associates to gain leverage against her, in order to sneak explosives into the Windowless Building to destroy it and assassinate Aleister. They are defeated by GROUP. During this time, Etzali faces Xochitl, a magician from his cabal who infiltrated MEMBER in order to find and eliminate Etzali for his betrayal.


By order of appearance:

New CharactersEdit


New AbilitiesEdit


New LocationsEdit


  • The voice actor of unnamed taxi driver is Sahara Makoto.
  • Etzali's real name is finally revealed.


Cultural ReferencesEdit

Differences in AdaptationEdit

  • Because the scene where Tetsumou is tasked in rooting out the traitors in BLOCK was cut, Tetsumou's Skill Polygraph is never featured. Instead of having her fingers blown off as the result of Etzali's actions,[4] she is instead caught in the Six Wings attack. Her fate is unknown.
  • An original scene is added in the episode where Frenda is shown being beaten up by Kakine.
  • In the novel, Musujime Awaki tells Teshio Megumi that the Windowless Building is actually not a building, implying that she doesn't know the true nature of it.[5]
  • The nature and the purpose of the device which Awaki has torn off her back (and even the fact it's the same device which was shown on her neck in the episode 24 of the previous season) was never explained in the anime.[5]

Animation TriviaEdit


# Title Time Scene & Notes
1 Gravitation Opening
2 Uchidome to Ippō Tsukō Last Order[6]
3 Hell Factor MEMBER[7]
4 Unverified Track BLOCK makes its move
5 Bang on it! Six Wings attack[7]
6 Unverified Track Eyecatch
7 AIM Stalker BLOCK's plan, Xochitl's appearance[7]
Majutsu no Heiki Cell blocks[7]
Panic Attack Etzali VS Xochitl[7]
Overdrive Musujime Awaki VS Teshio Megumi[8]
M/A/D/N/E/S/S Grimoire[7]
Deep Snow Aftermath[9]
Jinmon Interrogation[7]
Kakumei Zen'ya Ending
Gravitation (Preview Version) Preview

Unanswered QuestionsEdit

  • What is the organization mentioned by Xochitl?



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