Masaki Kaji (加治 将樹, Kaji Masaki) is a Japanese actor and singer. He is known for his role as Takeshi Momoshiro in the Prince of Tennis musical series, Tenimyu, and the live film adaptation. He was also part of a young men's stage acting troupe, D-BOYS, which perform in various skit-like performances. He has appeared in a various number of TV shows, musicals and movies.
On January 1, 2006, Kaji, with fellow D-BOYS member Hiroki Suzuki, appeared on the 43rd broadcast of Secret New Years' Performance Tournament "Young Man Colosseum", where Kaji displayed his acrobatic abilities. As well, on November 1, 2006, he made an appearance on a variety show called Kachinko (カチンコ!) broadcasting on TV Asahi. Then on January 1, 2007, Kaji appeared again on the New Year's Day 44th annual broadcast of the Secret New Years' Performance Tournament's "Chinese Lion Dance" segment, with Hiroki Suzuki and fellow D-Boys members, Yuya Endo, Masato Wada and former D-BOYS member, Yuuma Minakawa.
He appeared as a member of The Tigers, in the TV drama, The Hit Parade, starring fellow D-Boys members Masato Wada, Yuu Shirota, Hiroki Suzuki, Hirofumi Araki, Yuya Endo and Koji Seto. The show aired May 26, 2006 on Fuji TV.