Ohtsuka Akio CDs (singles)
Akio appears (sings/talks) in the following CD singles.
| 1992.12.16 | Kokoro no Sunday (CRDP-2008) | Song |
| 1995.04.29 | Yousei Yori Ai wo Komete 2 | Talk |
| 1995.04.29 | Yousei Yori Ai wo Komete 3 | Talk |
| 1995.04.29 | Yousei Yori Ai wo Komete 4 | Talk |
| 1995.04.29 | Yousei Yori Ai wo Komete 5 | Talk |