- Natsuyo Atarashi
- Older Lady
- Christine M. Auten
- Lunch Lady
- Greg Ayres
- Boy Student / Junior High Student (voice)
- Laura Chapman
- Granny / Riku's Mother (voice)
- Luci Christian
- Umi
- Akitarô Daichi
- Junior High Kid
- Hisashi Eguchi
- Gomez
- Tiffany Grant
- Riku
- Hilary Haag
- Sora
- Yumi Higashino
- Umi
- Tetsuo Komura
- Hiromiro Hanazono
- Mark Laskowski
- Employee / Junior High Student (voice) (as Mark X Laskowski)
- Mike MacRae
- Baseball Player / Gomez (voice)
- Yoshiaki Matsumoto
- Employee A
- Kaori Nazuka
- Ao
- Monica Rial
- Ao / Girl Student (voice)
- Ayaka Saitô
- Sora
- Yûko Sanpei
- Akira Kosaka
- Kaori Shimizu
- Riku
- Masami Suzuki
- Mom
- John Swasey
- Hanazono / Additional Voices (voice)
- Shin Tamura
- Batter
- Mike Vance
- Hiroki
- Kira Vincent-Davis
- Akira
- Masahito Yabe
- Hiroki
- Taro Yabe
- High School Boy
- Maria Yamamoto
- High School Girl
- Reiko Yasuhara
- Narrator
