El bosque del piano

Soma Saito

Kai Ichinose (voice)

Natsuki Hanae

Shuhei Amamiya (voice)

Junichi Suwabe

Sosuke Ajino (voice)

Yuichi Nakamura

Wei Pang (voice)

KENN

Lech Szymanowski (voice)

Mariya Ise

Sophie Ormesson (voice)

Katsuyuki Konishi

Karol Adamski (voice)

Toshiyuki Toyonaga

Kosei Hirata (voice)

Ryoko Shiraishi

Kai Ichinose as an Elementary School Boy (voice)

Aoi Yuki

Takako Maruyama (voice)

Mariko Higashiuchi

Aubrey Theiss (voice)

浦田わたる

Chang-soo Ahn (voice)

Reiou Tsuchida

Chang-woo Ahn (voice)

Chiaki Kobayashi

Satoru Mukai (voice)

Koji Yusa

Takeshi Saga (voice)

Hiroshi Yanaka

Kotaro Shiba (voice)

Maaya Sakamoto

Reiko Ichinose (voice)

Hideyuki Tanaka

Yoichiro Amamiya (voice)