Kyūshū Danji is a Japanese manga creator whose published works primarily fall within the boys' love genre. The creator is credited as the author of the manga series Kachō no Koi, which was originally published in 2003 and later adapted into an anime. This work is a comedic story centered on a thirty-three-year-old office manager, Otakara Kazuhiko, who is in deep denial about his homosexuality despite his office being filled with gay magazines and posters of men. The narrative follows his reluctant romance with a subordinate, Harada Ryuu, and the various comedic situations that arise as they navigate their relationship and the workplace. The manga was published in three complete volumes and has a sequel series titled Buchō no Koi. An original video animation adaptation of Kachō no Koi was produced by the Flash animation studio Panda Factory and released as a thirty-minute OVA.

Beyond Kachō no Koi, Kyūshū Danji is also known for the manga Nekozamurai, which was published in 2004. Furthermore, the creator contributed to J-Boy By Biblos, an anthology released in 2006 that featured work from multiple artists. Kyūshū Danji has been referred to as a notable figure within the yaoi or boys' love genre, indicating a professional identity closely tied to the creation of romantic narratives between male characters. The creator's body of work, while not extensive in the mainstream market, holds significance within its specific genre niche for its comedic take on office romance and themes of self-acceptance.