Born on May 18, 1988, Koji Seto is a well known actor and singer in Japan. He was born in Kama, Fukoka, and was the eldest child with 2 younger siblings. Seto dreamed of being a veterinarian, but his plans changed when he was able to watch the TV series Orange Days while he was still in Junior High School. He then planned to become an actor, being inspired by the performance of Satoshi Tsumabuki in the series. He then enrolled in an acting school, with his parents providing full support to their son. In 2005, Seto got a role as Makoto Kanno in the comedy TV series Rocket Boys.
After finishing his filming for the series (which took 6 months to air), he was surprised by his parents with a letter stating that Seto made it to the final round of the D-Boys audition by Watanabe Entertainment. Koji Seto then won the Grand Prix 2nd Winner award for his performance of “Himawari”, which was originally sung by Fukuyama Masaharu. in 2006, Seto starred along with his fellow D-Boys members in their own show, titled “D-Boys”. He also got the part for Eiji Kikumaru in Tenimyu, who is an energetic and highly acrobatic tennis player. He then popularized his nickname “Setomaru”, which was a combination of his last name, Seto, and the last name of Kikumaru. It became a household name in Japan with Seto’s 151 performances under the nickname. In 2007, Seto, along with stage partner Yukihiro Takiguchi, were given the Best Actors Album, and were given praise and acclaim by the creator. In 2009, Seto was casted for the latest sequel to the Ju-On movie which was entitled “Ju-On – Black Girl”. Seto then played again his role as Wataru Kurenai for the Kamen Rider Decade’s first and last episode. He also starred later that year for the TV series Atashinchi no Danshi as Satoru Okura, who is described as ill-tempered, but genius and witty.
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