History Trivia / ShinKamenRider2023

** Shinya Tsukamoto, who previously appeared as a university professor named Hazama in ''Film/ShinGodzilla'' (also co-directed by Anno), appears in this film to portray Dr. Hiroshi Midorikawa, Ruriko's father. Mikako Ichikawa (also of ''Shin Gozilla''), in turn, [[spoiler:portrays Shoko Midorikawa, Ichiro's mother]].

** Shinya Tsukamoto, who previously appeared as a university professor in ''Film/ShinGodzilla'' (also co-directed by Anno), appears in this film to portray Dr. Hiroshi Midorikawa, Ruriko's father. Mikako Ichikawa (also of ''Shin Gozilla''), in turn, [[spoiler:portrays Shoko Midorikawa, Ichiro's mother]].

** Several scenes that were cut from the film include: dialogue between Ruriko and Hiromu referring to the failed Sarracenian Aug; another battle between Kamen Rider and the Low-Class Members on the Wasp lair rooftop before the battle with Hachi Aug; and an extended version of Hayato Ichimonji watching Hongo head out to confront Ichiro, in which the second Kamen Rider expresses concerns about the government's interest in [[LifeEnergy prana]].

** Several scenes that were cut from the film include: dialogue between Ruriko and Hiromu referring to the failed Sacarrean Aug; another battle between Kamen Rider and the Low-Class Members on the Wasp lair rooftop before the battle with Hachi Aug; and an extended version of Hayato Ichimonji watching Hongo head out to confront Ichiro, in which the second Kamen Rider expresses concerns about the government's interest in [[LifeEnergy prana]].

** According to the ''Shin Kamen Rider Design Works'' book, Chou Aug-01 was going to be Ruriko's older sister before the character was gender-flipped to become Ruriko's older brother Ichiro.

* TroubledProduction: Right out the gate, lead actor Sosuke Ikematsu hurt his leg during filming, an ironic callback to Hiroshi Fujioka's infamous accident. The UsefulNotes/COVID19Pandemic also had a hand in pushing the film's release back.
** During a production feature on {{Creator/NHK}}, it came to light that Anno had been badgering the action director, and it came to a point where the director walked off the set. Reportedly Anno apologized and begged him to come back.

** [[https://twitter.com/Shin_KR/status/1653897225716596736 The official Shin Kamen Rider promotional Twitter account released a deleted scene]] that showcases an earlier version of the fight against the [[spoiler:SHOCKER Riders]], which begins with a recreation of one of Ishinomori's manga panels [[spoiler: where Hongo confronts the SHOCKER Riders on his bike in the rain.]] A behind-the-scenes documentary aired on {{Creator/NHK}} also featured a choreographed fight scene between the Double Riders and [[spoiler: SHOCKER Riders]] that took place at an outdoor industrial area. This sequence was entirely cut from the final film, with a completely altered, and primarily CGI-based, battle in the tunnel leading to [[spoiler: Ichiro's throne]] taking its place. Strangely enough, the [[spoiler: SHOCKER Rider]] boss fight in the ''SD Shin Kamen Rider Rumble'' spin-off game appears to be based on the cut sequence, though given the nature of the game as a BeatEmUp with no motorcycle gameplay, it makes sense from a developer standpoint.

** [[https://twitter.com/Shin_KR/status/1653897225716596736 The official Shin Kamen Rider promotional Twitter account released a deleted scene]] that showcases an earlier version of the fight against the [[spoiler:SHOCKER Riders]], which begins with a recreation of one of Ishinomori's manga panels [[spoiler: where Hongo confronts the SHOCKER Riders on his bike in the rain.]] A behind-the-scenes documentary aired on {{Creator/NHK}} also featured a choreographed fight scene between the Double Riders and [[spoiler: SHOCKER Riders]] that took place at an outdoor industrial area. This sequence was entirely cut from the final film, with a completely altered, and primarily CGI-based, battle in the tunnel leading to [[spoiler: Ichiro's throne]] taking it's place. Strangely enough, the [[spoiler: SHOCKER Rider]] boss fight in the ''SD Shin Kamen Rider Rumble'' spin-off game appears to be based on the cut sequence, though given the nature of the game as a BeatEmUp with no motorcycle gameplay, it makes sense from a developer standpoint.

* WhatCouldHaveBeen: The ''Official Shin Kamen Rider Design Book'' shows the many designs considered for the characters in the movie. For example, the Kamen Riders went through lots of redesigns that looked pretty different than how they looked originally (with some akin to the designs from ''Film/KamenRiderTheFirst''), but there's a special mention for [[spoiler: the film's BigBad Kamen Rider No.0/Ichiro Midorikawa, who instead of a Kamen Rider, was going to be an evil version of [[https://twitter.com/anon54980/status/1650761697693667330?t=TIJpAFLEO2xKLl-iTcs35A&s=19 Inazuman]] instead of just sharing the butterfly motifs in the same way K from ''Series/RobotDetective'' was turned into a member of SHOCKER.]]

* WhatCouldHaveBeen: The ''Official Shin Kamen Rider Design Book'' shows the many designs considered for the characters in the movie. For example, the Kamen Riders went through lots of redesigns that looked pretty different than how they looked originally (with some akin to the designs from ''Film/KamenRiderTheFirst''), but there's a special mention for [[spoiler: SHOCKER's great leader Kamen Rider No.0/Ichiro Midorikawa, who instead of a Kamen Rider, was going to be an evil version of [[https://twitter.com/anon54980/status/1650761697693667330?t=TIJpAFLEO2xKLl-iTcs35A&s=19 Inazuman]] instead of just sharing the butterfly motifs in the same way K from ''Series/RobotDetective'' was turned into a member of SHOCKER.]]

** The fight with [[spoiler: the SHOCKER Riders]] was going to be different, the official Shin Kamen Rider promotional Twitter account releasing a deleted scene that took place outdoors and recreated one of Ishinomori's manga panels, [[spoiler: where Hongo confronts the SHOCKER Riders on his bike in the rain.]] A behind-the-scenes documentary aired on {{Creator/NHK}} also featured a choreographed fight scene between the Double Riders and [[spoiler: SHOCKER Riders]] that took place at an outdoor industrial area. This sequence was entirely cut from the final film and replaced with a completely altered, and primarily CGI-based, battle in the tunnel leading to [[spoiler: Ichiro's throne.]] Strangely enough, the [[spoiler: SHOCKER Rider]] boss fight in the ''SD Shin Kamen Rider Rumble'' spin-off game appears to be based on the cut sequence, though given the nature of the game as a BeatEmUp with no motorcycle gameplay, it makes sense from a developer standpoint.

** During a production feature on Japanese Television, it came to light that Anno had been badgering the action director, and it came to a point where the director walked off the set. Reportedly Anno apologized and begged him to come back.

** The fight with [[spoiler: the SHOCKER Riders]] was going to be different, as it was revealed on the official twitter account that it was going to be outdoors, starting with a recreation of one of the panels of the manga showing [[spoiler: Hongo on his bike standing in front of all the SHOCKER Riders while it was raining]] and also a behind-the-scenes documentary aired on {{Creator/NHK}} notably featured a choreographed fight scene between the Double Riders and [[spoiler: SHOCKER Riders]] that took place at an outdoor industrial area, the sequence was entirely cut from the final film and replaced with a completely altered, and primarily CGI-based, battle in the tunnel leading to [[spoiler: Ichiro's throne.]] Strangely enough, the [[spoiler: SHOCKER Rider]] boss fight in the ''SD Shin Kamen Rider Rumble'' spin-off game appears to be based on the cut sequence, though given the nature of the game as a BeatEmUp with no motorcycle gameplay, it makes sense from a developer standpoint.

* PrequelInAnotherMedium: The movie got a manga prequel drawn by Fujimura Akeji and written by Yamada Kyuuri, called There is No True Peace in This World -Shin Kamen Rider SHOCKER SIDE- (or Nulla Mundo Pax Sincera: SHOCKER SIDE as the title was based on the song of the same name). It is about Ichiro's induction into SHOCKER and eventual transformation into the main antagonist of the film.

** Averted with the film's composer this time. Instead of Shiro Sagisu, ''Shin Kamen Rider''[='=]s soundtrack is composed by Taku Iwasaki, who composed music for ''Anime/TengenToppaGurrenLagann'', ''Manga/Jormungand'' and ''Manga/BungoStrayDogs''.

** Averted with the film's composer this time. Instead of Shiro Sagisu, ''Shin Kamen Rider''[='=]s soundtrack is composed by Taku Iwasaki, who composed music for ''Anime/TengenToppaGurrenLagann'' and ''Manga/BungoStrayDogs''.

* TroubledProduction: Right out the gate, lead actor Sosuke Ikematsu hurt his leg during filming, an ironic callback to Hiroshi Fujioka's infamous accident. COVID definitely had a hand in pushing the film's release back.

* WhatCouldHaveBeen: The ''official Shin Kamen Rider Design Book'' shows the many designs considered for the characters in the movie. For example, the Kamen Riders went through lots of redesigns that looked pretty different than how they looked originally (with some akin to the designs from ''Film/KamenRiderTheFirst''), but there's a special mention for [[spoiler: SHOCKER's great leader Kamen Rider No.0/Ichiro Midorikawa, who instead of a Kamen Rider, was going to be an evil version of [[https://twitter.com/anon54980/status/1650761697693667330?t=TIJpAFLEO2xKLl-iTcs35A&s=19 Inazuman]] instead of just sharing the butterfly motifs in the same way K from ''Series/RobotDetective'' was turned into a member of SHOCKER.]]

** Mirai Moriyama, whose filmography tends to be largely-sympathetic heroes (not to mention voicing {{UsefulNotes/Jesus}} in ''Manga/SaintYoungMen''), serves in the role of [[spoiler:[[BigBad the Great Leader]]]].

* PromotedFanboy: It cannot be understated how much of a ''Franchise/KamenRider'' fanboy Creator/HideakiAnno is. He cosplayed as Rider 1 not just for conventions in the 80’s, but in the lead up to his own wedding. His wife has also mentioned that he created his own unit of measurement for their home furniture based on the average size of a Rider toy.