 This article is about a villain and later ally in Kamen Rider Ex-Aid.
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- "If our experiment succeeds, the very concept of life will change."
- ―Saiko Yaotome[src]
Saiko Yaotome (八乙女 紗衣子, Yaotome Saiko) is a doctor and the central antagonist of the Kamen Rider Ex-Aid Trilogy: Another Ending series of films. Born Saiko Zaizen (財前 紗衣子, Zaizen Saiko), she is the daughter of the late Michihiko Zaizen.
History[]
Background[]
Saiko's ID for Seito University Hospital.
Saiko Yaotome is the daughter of Michihiko Zaizen but lost touch with him after his divorce with her mother. Having seen his work as a doctor, Saiko ultimately entered medical school and followed her father's footsteps. Around 2010, her father had succumbed to the Game Illness, which prompted Saiko to pursue a career in regenerative medicine and head the initiative to restore the Game Illness victims in 2016.
Kamen Rider Ex-Aid Trilogy: Another Ending[]
From the fact that Bugsters retained the memories of their human hosts, Saiko determined that they retained their residual genetic material. Having investigated every possibility, Saiko and her team came to the conclusion that the only option to restore those erased by the Game Illness was by reconstructing their human genes from the Bugster whose virus they had fallen to. Recovering the Kamen Rider Chronicle Gashat from Taiga Hanaya, Kuroto Dan was able to revive his late father Masamune Dan, and had Saiko extract the Bugster Black Parado from his body. [Kamen Rider Brave & Snipe]
Saiko commissioned the creation of the Bugvisor G from Tsukuru Koboshi. This new game console served as a platform for the Let's Make a Bugster, a game which could theoretically transform Bugsters into humans. Once the games console was completed, Saiko personally approached Parado and Poppy Pipopapo for assistance in her experiment, with her personally working with Poppy to play dress-up. She had also secretly abducted Parado using a Bugvisor and replaced him with Black Parado. After multiple Costume Changes, Saiko captured her in the Bugvisor and had her tied up, revealing her true colors. After Parado rescued Poppy, he confronted Saiko of her intentions and connection with her father. She later has Another Para-DX and a Genomes duplicate based on Michihiko Zaizen's data after the Bugster Riders, but her forces are swiftly defeated. When Kuroto Dan arrived, he quickly turned on her as his agendas don't fit her goals of creating regenerative medicine from the Bugster Virus. Depressed, Saiko took her leave as she was conflicted by the realization that the Bugsters had human hearts. [Kamen Rider Para-DX with Poppy]
Following her disassociation with Kuroto Dan, Saiko was accosted by one of the Zombie Gamers brought forth by Dan's new game Zombie Chronicle. Though willing to accept her death, Saiko was saved by Kiriya Kujo as Kamen Rider Lazer. Kiriya explained that he knew her story as well as what she betrayed, however, he insisted that she was the only one who could perfect the Regenerative Medicine and bring back those lost to the Game Illness. Saikou continued to help the CR to put a stop at Kuroto Dan's game, only to later be turned into a Bugster Virus zombie who proceeded to attack Poppy. Ultimately, after Kuroto Dan was finally defeated by Kiriya, Zombie Chronicle ceased and so Saiko and all others infected by the zombies were restored to their original forms.
Following her recovery, Saiko retrieved the Bugvisor G. By applying the mechanics of Let's Make a Bugster, Saiko had Kiriya's human genes analyzed and reconstructed before resetting them to their base state, leading to the restoration of Kiriya Kujo in his human form in an operation headed by Hiiro Kagami. A vital component of this operation, however, was ironically the reprogramming ability of the God Maximum Mighty X Gashat left behind by Kuroto Dan. Through further research of God Maximum Mighty X, Saiko predicted that it would greatly change the future of regenerative medicine. [Kamen Rider Genm vs. Lazer]
Personality[]
At first glance, Saiko appears to be passionate in her work towards regenerative medicine, though she was also heavily motivated by her goal to revive her father to get revenge on the Doctor Riders, going so far as to work with Kuroto to help him with his plans in order to achieve her own. Initially, she looked down on Bugsters and treated them as mere tools to serve humans, in particular harboring a deep hatred for Parado, whose birth had resulted in her father's death. However, she fell into despair following Kuroto's betrayal and the realization of Bugsters' human-like emotions leaving her conflicted. It was through Kiriya's unwavering belief in Saiko despite her actions that enabled her to regain her faith in herself, putting aside her hatred to assist CR so as to not disappoint Kiriya's expectations. In the end, she was one of the few who were able to see through Kuroto's truest intentions as she used the work that Kuroto had left behind to further the progress of regenerative medicine, restoring Kiriya, whom she had begun to take a liking to.
Behind the Scenes[]
Portrayal[]
Saiko Yaotome was portrayed by Yurina Yanagi (柳 ゆり菜, Yanagi Yurina)
Appearances[]
Notes[]
to be added