Yamaguchi Kappei CDs (singles)
Kappei appears (sings/talks) in the following CD singles.
| 1991.01.21 | Characters Christmas (PCDG-027) | Song/Talk |
| 1991.01.21 | Haikei Akane-san (PCDG-024) | Talk |
| 1991.01.21 | Kon'ya ha April Fool (PCDG-019) | Song/Talk |
| 1991.01.21 | Konoyode Ichiban Oshougatsu ga Suki (PCDG-016) | Talk |
| 1991.01.21 | Miwaku no Limbo Dance (PCDG-023) | Talk |
| 1991.01.21 | Nekohanten Menu Song (PCDG-020) | Talk |
| 1991.01.21 | November Rain (PCDG-026) | Talk |
| 1991.01.21 | Omoide ga Ippai (PCDG-022) | Talk |
| 1991.01.21 | Otousan (PCDG-021) | Song/Talk |
| 1991.01.21 | Valentine ni Kurobara wo (PCDG-017) | Talk |
| 1991.01.21 | Yasashii Iikoni Narenai (PCDG-018) | Talk |
| 1991.01.21 | Yo-i Don! (PCDG-025) | Talk |
| 1993.10.06 | Ranma to Akane no Ballad (PCDG-00060) | Song/Talk |
| 1995.12.21 | Da Tsu Te (CODA-823) | Song |