Li-Book 2000

Turning Point
- Lyrics: Masami Okui
- Composition, arrangement: Toshiro Yabuki
Souda, zettai. (そうだ、ぜったい。, Souda, zettai.^?)
- OVA Starship Girl Yamamoto Yohko opening song
- Lyrics: Masami Okui
- Composition, arrangement: Toshiro Yabuki
Niji no youni (虹のように, Niji no youni^?)
- Radio drama Slayers N.EX ending song
- Lyrics, composition: Masami Okui
- Arrangement: Toshiro Yabuki
Endless Life
- PS game Advanced V.G.2 theme song
Sore wa Totsuzen yattekuru (それは突然やってくる, Sore wa Totsuzen yattekuru^?)
- Lyrics: Masami Okui
- Composition, arrangement: Toshiro Yabuki
Chaos
- Lyrics, composition: Masami Okui
- Arrangement: Hideki Satou
Cutie
- TV anime Di Gi Charat Summer Special 2000 opening song
- Lyrics: Masami Okui
- Composition, arrangement: Toshiro Yabuki
Rinbu -revolution- (輪舞 -revolution-, Rinbu -revolution-^?)
- TV anime Revolutionary Girl Utena opening song
- Lyrics: Masami Okui
- Composition, arrangement: Toshiro Yabuki
Sunrise Sunset
- Lyrics, composition: Masami Okui
- Arrangement: Itaru Watanabe
Kiss in the Dark
- PS game Evil Zone theme song
- Lyrics, composition: Masami Okui
- Arrangement: Tsutomu Ohira
Just do it
- Lyrics: Masami Okui
- Composition, arrangement: Toshiro Yabuki
Vitamin ~Souda, zettai.~ (ビタミン～ぜったい、そうだ。～ , Vitamin ~Souda, zettai.~^?)
- Lyrics: Masami Okui
- Composition, arrangement: Toshiro Yabuki
Monogatari (物語, Monogatari^?) (A.C version)
- Lyrics: Masami Okui
- Composition: Toshiro Yabuki
- Arrangement: Hideki Satou
Bay side love story ～from Tokyo～
- TV anime Neon Genesis Evangelion insert song
- Lyrics, composition: Masami Okui
- Arrangement: Toshiro Yabuki, Tsutomu Ohira