Full cast of Insomniacs After School

Gen Sato

Ganta Nakami (voice)

13 episodes

Konomi Tamura

Isaki Magari (voice)

13 episodes

Seiichiro Yamashita

Tao Ukegawa (voice)

10 episodes

Lynn

Motoko Kanikawa (voice)

10 episodes

Natsumi Fujiwara

Kanami Anamizu (voice)

10 episodes

Sumire Morohoshi

Mina Nono (voice)

9 episodes

Mamiko Noto

Usako Kurashiki (voice)

8 episodes

Sho Karino

Rui Haida (voice)

8 episodes

Konomi Inagaki

Female Student (voice) / Softball Club Member (voice) / Child (voice) / Woman (voice)

8 episodes

Takuya Tsuda

Male Student (voice) / Man (voice)

7 episodes

Haruka Tomatsu

Yui Shiromaru (voice)

7 episodes

Ikuto Kanemasa

Ken Hakui (voice)

5 episodes

Aya Suzaki

Young Ganta Nakami (voice) / Newscaster (voice)

4 episodes

Yuu Kawada

Announcement (voice) / Police Officer (voice) / Male Student (voice)

3 episodes

Bianca Ogura

Audience Member (voice) / Woman (voice) / Female Student (voice)

3 episodes

Yohei Matsuoka

Male Student (voice) / Student Council President (voice)

3 episodes

Haruna Terada

Young Woman (voice) / Teacher (voice) / Female Student (voice)

3 episodes

Hidenobu Kiuchi

Ganta's Father (voice)

3 episodes

Arisa Nakada

Female Student (voice)

2 episodes

Shou Okumura

Radio Voice (voice) / Teacher (voice)

2 episodes

Hana Hishikawa

Female Student (voice) / Rui's Girlfriend (voice)

2 episodes

Sora Amamiya

Haya Magari (voice)

2 episodes

Megumi Toyoguchi

Isaki's Mother (voice)

2 episodes

Yuri Hinami

Female Student (voice) / Woman (voice)

2 episodes

Sayaka Ohara

Ganta's Mother (voice)

2 episodes

Saeko Akiho

Vice Principal (voice)

2 episodes

Juri Nagatsuma

Female Student (voice)

1 episode

Takako Tanaka

Female Student (voice)

1 episode

Emiri Suyama

Female Student (voice)

1 episode

Rin Kusumi

Female Student (voice)

1 episode

Tomoyo Takayanagi

Female Student (voice)

1 episode

Minami Iinuma

Female Student (voice)

1 episode

Nao Ojika

Female Student (voice)

1 episode

Daisuke Nakamura

Radio Voice (voice)

1 episode

Mika Kanda

Home Economics Teacher (voice)

1 episode

Shinya Takahashi

Teacher (voice)

1 episode

Mayuko Kazama

Female Student (voice)

1 episode

Yoko Soumi

Softball Club Advisor (voice)

1 episode

Riho Sugiyama

Female Student (voice)

1 episode

Yuki Ito

Male Student (voice)

1 episode

Yuki Terui

Male Student (voice)

1 episode

Go Imakiire

Man (voice)

1 episode

Hayato Kashiwazaki

Man (voice)

1 episode

Tomoya Ito

Man (voice)

1 episode

Atsushi Tamaru

Senpai (voice)

1 episode

Kouichi Souma

Principal (voice)

1 episode

Chiwa Saito

Motoko's Mother (voice)

1 episode

Kumiko Nakane

Teacher (voice)

1 episode

Tomomi Tanaka

Audience Member (voice)

1 episode

Mitsuki Nakae

Mother (voice)

1 episode

Mirii Saito

Child (voice)

1 episode