Icon-decade.png This article is about a/an actor in Kamen Rider Decade.

Masahiro Inoue (井上 正大 Inoue Masahiro) is a Japanese actor and martial artist (Tae Kwon Do practitioner) who portrayed Tsukasa Kadoya/Kamen Rider Decade in Kamen Rider Decade. He would later reprise the role in Kamen Rider Wizard, several films, and Kamen Rider Zi-O.

Outside of Decade, he is known for his portrayal of Jinga in Garo: Gold Storm - ShoIcon-crosswiki.png and Kami no Kiba: Jinga.


Inoue debuted as an actor in 2008, where he played Keigo Atobe in the Prince of Tennis musicals. One year later, he landed the lead role of Tsukasa in Kamen Rider Decade, where he would continue to play the role in several future crossovers of the character.

From 2015 to 2018, Inoue starred as Jinga in the Garo franchise, portraying the main antagonist in the Yami o Terasu Mono continuity.

He later portrayed Kensei Sumeragi in Road59, a multimedia project by Bushiroad. The project also stars Syuya Sunagawa and Yuki Kimisawa.




TV Commercial

  • Oronamin C - Kamen Rider Decade (voice only, 1 TV Commercial)

Video Games



Inoue as Kamen Rider Drive.

  • As with Inoue's role as Jinga in Garo: Goldstorm - Sho, it would become a joke to say that he entered the "World of GARO" during talk shows. According to him, he signed a Decade KamenRide card for Garo director Keita Amamiya.
  • In 2015, Inoue was among the fans whom played the arcade game Narerunda! Kamen Rider Drive, receiving a souvenir card depicting himself as Kamen Rider Drive.[1]
  • Inoue is a day older than Takeru Satoh.
  • He announced his marriage to a Sailor Moon actress Jamie Natsuki on December 2016, with their first child was born in April 17, 2017.[2] However they divorced on May 8, 2020, which was confirmed by Inoue himself on Twitter. [3][4][5]
  • Inoue is also a skilled martial artist, trained in both taekwondo and Shorinji Kempo, and demonstrated his skills on the variety show VS ARASHI.
    • He is first dan holder in taekwondo and he shows his skill in martial art in the film Taekwondo Damashii: Rebirth, in which he is one of the protagonists.
  • Inoue can solve a Rubik's Cube in under 3 minutes, with his fastest record as 2 minutes and 22 seconds.
  • Regarding his appearance on Kamen Rider Zi-O, Inoue announced on his YouTube channel that it would be his final reprisal of Tsukasa [6], though he eventually returned in 2021 for Rider Time: Zi-O VS Decade & Decade VS Zi-O.
    • Inoue would express his disappointment with Decade Complete Form 21's design and ridicule it. [7][8]


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