He also briefly portrayed Takashi Kawamura in Tenimyu, The Prince of Tennis musical series, in the More Than Limit: St. Rudolph Gakuen musical.
In 2006, Keisuke won the role of Kunimitsu Tezuka, the stoic captain of Seigaku Middle School's tennis club, as part of the third generation Seigaku cast, becoming the fourth actor to play Tezuka in The Prince of Tennis musicals, Tenimyu.
He is best known for his roles as Shusuke Fuji of the fourth generation Seigaku cast in The Prince of Tennis musical series, Tenimyu, and Kirikaze in Fuma no Kojiro, a TV drama.
He is best known for his roles as Sadaharu Inui of the fourth generation Seigaku cast in The Prince of Tennis musical series, Tenimyu, and Shijo Haruki in Hanazakari no Kimitachi e / Ikemen♂Paradise TV drama.
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Since Tsuchiya left the Prince of Tennis the role of Oishi has been played by Hiroki Suzuki, Yukihiro Takiguchi, Yuya Toyoda, Yuki Tsujimoto, and is currently played by Jin Hiramaki.