Yoshino Aoyama as Hitori 'Bocchi' Gotoh (voice)

Sayumi Suzushiro as Nijika Ijichi (voice)

Saku Mizuno as Ryo Yamada (voice)

Ikumi Hasegawa as Ikuyo Kita (voice)

Maaya Uchida as Seika Ijichi (voice)

Sayaka Senbongi as Kikuri Hiroi (voice)

Kotori Koiwai as PA-san / Jimihen (voice)

Misaki Watada as Futari Gotoh (voice)

Junji Majima as Naoki Gotoh (voice)

Rie Suegara as Michiyo Gotoh (voice)

Kana Ichinose as Hitori's Fan #1 / Live Concert Audience Member (voice)

Miyuri Shimabukuro as Hitori's Fan #2 / Live Concert Audience Member (voice)

Katsuyuki Miura as Ginjiro Yoshida / Imaginary Store Clerk / Man (voice)

Sally Amaki as Eliza Shimizu / Student (voice)

Maki Kawase as Shima Iwashita / Student (voice)

Atsushi Kosaka as Beach Shack Employee (voice)

Shigeru Chiba as Post-apocalyptic Guy (voice)

Tatsumaru Tachibana as Takkun (voice)

Yuiko Tatsumi as Mii-tan (voice)

Hinaki Yano as Kita's Friend / Imaginary Former Classmate (voice)

Yume Miyamoto as Kita's Friend / Student Council President (voice)

Konomi Kohara as Culture Festival Committee Member / Music Shop Manager / Student (voice)

Seena Hoshiki as Culture Festival Committee Member / Music Shop Clerk / Student (voice)

Rikuya Yasuda as Live Concert Audience / Student (voice)

Taichi Ichikawa as Imaginary Assistant Director / Student (voice)

Shuichiro Umeda as High-spirited Boy / Student (voice)

Hina Youmiya as Student (voice)

Megumi Yamaguchi as Student (voice)

Natsumi Kawaida as Student (voice)

Shinichiro Kamio as Space Documentary Narrator (voice)