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

2004.04.28	Mahou Sensei Negima Mahora Gakuen Chuutoubu 2-A 1 Gakki (KICA-639)	Song
2004.07.28	Can_Drops [Drops] (KICA-646)	Song
2004.08.25	Hatsunejima Drama Theater chapter 2 Kotori (LACA-5307)	Talk
2004.08.25	Mahou Sensei Negima Mahora Gakuen Chuutoubu 2-A 2 Gakki (KICA-650)	Song/Talk
2004.08.25	Memories Off -Sorekara- Drama CD (KDCA-12)	Talk
2004.11.26	Mahoushoujo Lyrical Nanoha Sound Stage 01 (KICA-666)	Talk
2004.12.22	Memories Off -Sorekara- Vocal Collection (KDCA-26)	Song
2005.12.21	Mahou Sensei Negima! DJCD Vol.1 (KICA-751)	Talk
2006.04.07	Minna de Tsukuru Memo Off CD! Season 3 (VGCD-0031)	talk/song
2007.06.27	Negima!? DJCD Vol.2 Kandasan Aipon no Negimaho Radio!? (KICA-820 KICA-821)	Talk
2007.09.26	Negima!? Best Album (KICA-842)	Song
2008.01.23	Sky Girls Character Best Album (GFCA-62)	Song
2008.03.07	Hayate no Gotoku! Drama CD 2 (GNCA-1121)	Song/Talk
2008.03.21	Hayate no Gotoku! Drama CD 3 (GNCA-1122)	Talk
2009.02.25	Ichiban Ushiro no Daimaou Vol 1 (BNEG-1010)	Talk
2009.03.06	Hayate the Combat Butler Character Cover CD (GNCA-1179)	Song
2009.06.24	Hayate the Combat Butler! Character CD 2nd Series 01 (GNCA-1221)	Talk
2009.06.24	Hayate the Combat Butler! Character CD 2nd Series 02 (GNCA-1222)	Talk
2009.06.24	Hayate the Combat Butler! Live 2009 (GNCA-1229)	Song/Talk
2009.07.08	Utagoe Kissa Hakobune (KICA-982)	Song
2009.07.22	Hayate the Combat Butler! Character CD 2nd Series 03 (GNCA-1223)	Talk
2009.07.22	Hayate the Combat Butler! Character CD 2nd Series 04 (GNCA-1224)	Song/Talk
2009.08.26	Hayate the Combat Butler! Character CD 2nd Series 05 (GNCA-1225)	Talk
2009.09.30	Hayate the Combat Butler! Character CD 2nd Series 07 (GNCA-1227)	Talk
2009.09.30	Hayate the Combat Butler! Character CD 2nd Series 08 (GNCA-1228)	Talk
2009.09.30	Ichiban Ushiro no Daimaou Vol.2 (BNEG-1013)	Talk
2010.06.09	Anyamaru Tantei Kilmin Zoo Assort CD 1 (KICA-3122)	Talk
2010.08.04	Anyamaru Tantei Kilmin Zoo Assort CD 2 (KICA-3123)	Talk
2011.03.23	Uta Nanka Zenzen Utaitaku Nain Dakarane! (KICA-3136)	Song
2013.04.17	Twinkle Voice -Koe no Okurimono (UMCA-10015)	Song
2013.05.08	Hayate no Gotoku! Character Songs Album (GNCA-1367)	Song
2013.06.26	Ambitious (GNCA-1359)	Song
2013.06.26	Hayate no Gotoku! Cuties Ending and Heroine Soundtrack 1 (GNCA-1380)	Song
2013.07.31	Hayate no Gotoku! Cuties Ending and Heroine Soundtrack 2 (GNCA-1382)	Song