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.
On September 9, 2007, Takki graduated alongside his fellow 3rd Generation Seigaku regulars (except for Kaidou Kaoru actor Yanagishita Tomo).
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.