This article is about a/an episode in Mashin Sentai Kiramager.
Red alert.jpg WARNING: This episode contains scenes of murder, character death, and mild nudity. Viewer discretion is advised!

Episode 13: Great Underground War (地底大戦争 Chitei Dai Sensō) is the thirteenth episode of Mashin Sentai Kiramager. It reveals the origin of Takamichi Crystalia and the debut of Super Heavy Machine Drijan.


Takamichi Crystalia was revealed to be none other than Mabushina's older brother? However, Mabushina strongly rejects Takamichi, who thinks that his voyager-like heart would lead to problems. The reason being was when Yodonheim invaded Crystalia, Takamichi was off treasure hunting. The Kiramagers were sent out into the city immediately to handle a tentacle monster attacking everyone. While Takamichi awaits for the completion of his new high-tech Mashin being prepared by Mr. Hakataminami, he goes off to hunt for some more treasure. Meanwhile, Juru, who feels that Takamichi's words and actions can't truly represent his true feelings, starts to further question the situation.


to be added


Guest Cast

Suit Actors


  • to be added


  • Viewership: TBA
  • As part of Super Hero Time, this episode aired alongside Kamen Rider Zero-OneIcon-crosswiki.png episode 37, It Can't Be StoppedIcon-crosswiki.png.
  • Pre-Credits Scene: Shovellow attempts and fails to recruit Drijan into his crew of Mashins.
  • The title of the episode is a reference to the film The Terror Beneath the Sea , also known as Water Cyborg or The Great Seafloor War (海底大戦争 Kaitei Daisensou), a 1966 film produced by Toei in collaboration with Ram Films. 
  • Shoji Kohei/Takamichi is given a credit in the opening sequence, although it is text only. He would later be included in the opening in the next episode.
  • Two extras in the episode were named "Kotaro" and "Minami" respectively, a reference to Kohtaro Minami, also known as Kamen Rider Black/Black RX.
  • In a scene where Juru is reaching his hand out to Takamichi, a poster can be seen in the background reading "Perfect Performance And Physical". This is a nod to Muryou Hakataminami's actor, Daimaou Kosaka, who is most known for singing the song, "PPAP (Pen-Pineapple-Apple-Pen)".
    • Episode 5, timestamp 07:38, is the first full appearance.
  • Muryou is seen wearing a jersey with the logo of the real life football team, the Green Bay Packers.
  • This is likely the first episode to be shot after production restarted. There are some noticeable differences in this episode compared to the last, such as Tametomo's hair being brighter, Juru's hair being slightly longer, and some noticeable social distancing between the cast.

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