D-Boys
In October 2004, Kaji joined the Watanabe Entertainment group named the D-BOYS. As a member of the D-BOYS, Kaji also keeps a blog, which he updates occasionally. Being a part of the D-BOYS provided Kaji with a lot of opportunities. Among them was to perform with the group of boys and expand his experience as a performer. On August 6, 2005, Kaji, along with Hiroki Suzuki, appeared on the radio program, Marvelous Radio Vibration that was hosted by fellow D-Boys members Yuu Shirota and Kotaro Yanagi.
The D-BOYS so far have released two Photobooks. The first photobook released on April 27, 2005, was self-titled D-Boys, while the second, released on March 15, 2006, was called Start, both which contain many photos of Kaji.
The D-BOYS have also starred in their own drama documentary variety series called, DD-Boys in which Kaji's appeared in a few episodes as himself. The show was 24 episodes long and ran from April 10 to September 25, 2006.
In June 2007, the D-BOYS starred in their very own musical together called, D-BOYS STAGE, which ran from June 3 to June 10 at the Space Zero theater in Tokyo. Kaji appeared in the musical as a regular performer for the run of the musical.
Read more about this topic: Masaki Kaji, Biography