Nobuhiko Okamoto

Iolite (voice)

Ikumi Hayama

Heliodor (voice)

Mitsuki Nakamura

Teacher (voice)

Mari Uchiyama

Girl (voice)

Hana Shimano

Girl (voice)

Maki Hanagiri

Girl (voice)

Kouhei Yanagi

Boy with Glasses (voice)

Yuuki Nakajima

Boy (voice)

Rei Miura

Boy (voice)

Haruto Shindo

Boy (voice)

Ryo Nakamura

Director

Toshimitsu Kobayashi

Supervising Animation Director

Tetsuya Yamada

Writer

Chae Kwang-han

Animation Director

Ju Hyeong-jong

Animation Director

Kim Seong-min

Storyboard Artist

Park Hoon

Animation Director

Kim Si won

Animation Director