Japanese Credits:

Production: Pioneer LDC, Sotsu Agency
Broadcast: Fuji TV
Animation: Radix

Producer: Yasuyuki Ueda
Producer, Technical Director, Art Continuity: Tomokazu Tokoro
Screenplay, Original Creator, Series Composoition: yoshitoshi ABe
Character Design: Akira Takada
Design Works: Hiromichi Kimu

Art Director: Shinji Katahira
Asistant Director: Takahiro Oomori
Color Design: Naomi Endou
Composite Director: Yutaka Nagaushi

Music Composition: Kou Ootani (Note that Pioneer USA is listing his name as Yuki Otani)
Music perfomance: Heart of Air
Audio Production: Satoshi Motoyami

Rakka: Hirohashi Ryo
Reki: Noda Junko
Kana: Miyajima Eri
Kuu: Yajima Akiko
Hikari: Fumiko Orikasa
Nemu: Murai Kazusa
Hyouko: Suzuki Chihiro
Midori: Mizuno Manabi
Washi: Ooki Tamio
Kuramori: Hisakawa Aya
Dai: Higa Kumiko
Shouta: Asano Masumi
Hana: Tokunaga Ai