Kimura Akiko
- Change Mind
- PSCR-6131 : Happy Lesson "Melody" (Happy Lesson)
- Love Love Motion!
- HIDPD-2004 : Taiyou to Kaze to Watashi (Ninomai Kisaragi) (Happy Lesson)
- Melody
- PSCR-6131 : Happy Lesson "Melody" (Happy Lesson)
- Place
- Que serį serą
- KSCA-29145 : Happy Lesson Hara Hara Music (Happy Lesson)
- taiyou to kaze to watashi
- HIDPD-2004 : Taiyou to Kaze to Watashi (Ninomai Kisaragi) (Happy Lesson)
- zanzou
- LKCR-10029 : Koikoi7 Song Collection, Paradise (Koikoi7)