Kaji Yuuki (Totsuka Tatara) - Circle of Friends
Kanato Sakamaki (Kaji Yuuki) - Kirisaki Carnival
Yuuki Kaji - Circle of Friends
Kanato Sakamaki (CV. Yuuki Kaji) - Gin no Bara
Kaji Yuuki - ネンネンサイサイDay By Day!
Yuuki Kaji - Pomp and Circumstance
Kenn,Okiayu Ryotaro, Kaji Yuuki, Morita Masakazu - Montage (OST Miracle Train: Ooedo-sen e Youkoso)
Kaji Yuuki(Alibaba) - one step further(Off Vocal Ver
Okiayu Ryotaro, Kaji Yuuki, Morita Masakazu, KENN - Montage
Yasumoto Hiroki Maeno Tomoaki Kaji Yuuki Kawahara Yoshihisa - 06 mousou elektel 2 妄想エレキテル2
Kaji Yuuki - Setsudan Butou Kai (OST Diabolik Lovers)
Kaji Yuuki - Kirisaki Carnival (Ripper Carnival)
[CD] Kaji Yuuki - Kamigami no Asobi - Anubis Ma'at
Kaji Yuuki ( CV: Totsuka Tatara) - Circle of Friends
Kaji Yuuki & Hatano Wataru - 木漏れ日ループ
HoneyWorks feat. Mochizuki Souta (CV: Kaji Yuuki) - Yakimochi no Kotae
Kaji Yuuki - A Solution for Jealousy
Kaji Yuuki, Kamiya Hiroshi, Inoue Marina, Ishikawa Yui - Levi VS Mikasa ~Dotou no Souji Batoru~
Kaji Yuuki (Totsuka Tatara) - Circle of Friends (Project K ED 2)
Kaji Yuuki, Taniyama Kishou, Ishikawa Yui - Hangeki no Daichi
Yukine (CV. Kaji Yuuki) - Catch
Kaji Yuuki - Roku Rioroshi Mini Dorama 'Boku Dake no Mono'
Kaji Yuuki - Oppai Dragon no Uta
Kanato Sakamaki (CV.Kaji Yuuki) - Grateful Dead March
Project K (ED 2) - Circle of Friends - by Kaji Yuuki
Проект К - Circle of Friends - by Kaji Yuuki
Hosoya Yoshimasa & Hino Satoshi & Matsuoka Yoshitsugu & Kaji Yuuki & Tachibana Shinnosuke - Enbukyoku, kimi ni