Keiichi appears (sings/talks) in the following miscellaneous CDs.

1986.12.15	Non Stop Touch (D32P038)	Song
1990.11.21	Everybody's Christmas	Song
1995.04.21	Garou Densetsu 3 (PCCB-179)	Talk
1995.08.19	The King of Fighters 95 (PCCB-187)	Talk
1996.02.07	Real Bout Garou Densetsu (PCCB-203)	Talk
1996.08.21	The King of Fighters 96 (PCCB-223)	Talk
1997.02.05	Real Bout Garou Densetsu Special (PCCB-240)	Talk
1997.08.20	The King of Fighters 97 (PCCB-273)	Talk
1998.04.17	Real Bout Garou Densetsu 2 The Newcomers (PCCB-310)	Talk
1998.08.19	The King of Fighters 98 (PCCB-334)	Talk
1999.03.17	Garou Densetsu Wild Ambition (PCCB-364)	Talk
1999.08.18	The King of Fighters 99 (PCCB-387)	Talk
2000.08.23	The King of Fighters 2000 (SCDC-035)	Talk
2006.02.22	Super Robot Spirits Original Theme Song 2 (BSCH-30044)	Song

Keiichi appears (sings/talks) in the following CD singles.

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