Masami Okui

- Butter-Fly - From THE FIRST TAKE
- Butter-Fly - From THE FIRST TAKE - Single · 2025
- Rondo - revolution
- S-mode #2 · 2004
- Shuffle
- DEVOTION · 2001
- Toki ni Ai wa
- S-mode #3 · 1999
- Get along (ALBUM VERSION)
- SLAYERS MEGUMIXXX · 2020
- Get along
- SLAYERS MEGUMIX · 1995
- Baby Baby Baby
- Baby Baby Baby - Single · 2025
- White season
- angel's voice · 2002
- Jama wa Sasenai
- Give a reason - EP · 2004
- only one, No.1
- NEEI · 1999

Butter-Fly - From THE FIRST TAKE - Single

Butter-Fly - From THE FIRST TAKE - Single

2025
Oneness - 20th Anniversary - - Single

Oneness - 20th Anniversary - - Single

2025
Baby Baby Baby - EP

Baby Baby Baby - EP

2025
God Knows... - From CrosSing - Single

God Knows... - From CrosSing - Single

2023
Prayer - Single

Prayer - Single

2023
One My Little Star - Single

One My Little Star - Single

2021
Ave Maria - Single

Ave Maria - Single

2020