| solo Song/Talk | Memories Off -Sorekara- Character File 06 (KDCA-11), 2004.09.23 | Kobayashi Yumiko (小林由美子) |
| Song | Excel Girls Golden Best 20 (VICL-60546), 2000.03.23 | Kobayashi Yumiko (小林由美子) |
| Song/Talk | Love Hina 3 (KICA-520), 2000.08.23 | Kobayashi Yumiko (小林由美子) |
| Song/Talk | Silent Eve Love Hina Winter Special (KICA-531), 2001.01.24 | Kobayashi Yumiko (小林由美子) |
| Song | Sister Princess 12 Nin no Tenshi Tachi (KICA-532), 2001.02.07 | Kobayashi Yumiko (小林由美子) |
| Talk | Prologue of Sister Princess Dear My Brother (KICM-3007), 2001.04.04 | Kobayashi Yumiko (小林由美子) |
| Song | Love Hina Spring Special (KICA-541), 2001.06.06 | Kobayashi Yumiko (小林由美子) |
| Song | Sister Princess Original Soundtrack Angel Jukebox (KICA-552), 2001.08.29 | Kobayashi Yumiko (小林由美子) |
| Song | Sister Princess Kaleidoscope (KICA-556), 2001.09.29 | Kobayashi Yumiko (小林由美子) |
| Song | Hinata Girls Song Best 2 (KICA-557), 2001.10.03 | Kobayashi Yumiko (小林由美子) |
| Song | Sakura Revolution [Prits] (KICM-3019), 2002.01.01 | Kobayashi Yumiko (小林由美子) |
| Song | Kokuhaku Kimeteyo! [Prits] (KICM-3023), 2002.02.01 | Kobayashi Yumiko (小林由美子) |
| Song | Private Emotion [Prits] (KICM-3026), 2002.03.01 | Kobayashi Yumiko (小林由美子) |
| Song | Cherry Blossom [Prits] (KICA-589), 2002.12.25 | Kobayashi Yumiko (小林由美子) |
| Talk | Memories Off -Sorekara- Drama CD (KDCA-12), 2004.08.25 | Kobayashi Yumiko (小林由美子) |
| Song | Memories Off -Sorekara- Vocal Collection (KDCA-26), 2004.12.22 | Kobayashi Yumiko (小林由美子) |
| Talk | Splendide Shana Vol 1 (GNCA-1154), 2008.02.22 | Kobayashi Yumiko (小林由美子) |
| Talk | Splendide Shana Vol 2 (GNCA-1155), 2008.04.24 | Kobayashi Yumiko (小林由美子) |
| Talk | Angel Beats! SSS Radio Vol.3 (SSR-0003), 2010.10.27 | Kobayashi Yumiko (小林由美子) |
| Talk | Kami-sama Dolls Vol.1 (VTCL-60248), 2011.08.24 | Kobayashi Yumiko (小林由美子) |
| single Song | Ai (Chuuseishin) [Excel Girls], 1999.11.03 | Kobayashi Yumiko (小林由美子) |
| single Song | Melody (LACM-4004), 2001.01.24 | Kobayashi Yumiko (小林由美子) |
| single Song | Egao ga No.1! Yapparine (KICM-3011), 2001.07.04 | Kobayashi Yumiko (小林由美子) |
| single Song/Talk | Sister Princess Xmas Song Collection (KICM-3048), 2003.12.21 | Kobayashi Yumiko (小林由美子) |