- Yui Horie
- Â Koko Kaga 24 episodes, 2013-2014
- Makoto Furukawa
- Â Banri Tada 24 episodes, 2013-2014
- Mike Haimoto
- Â Banri Tada 24 episodes, 2013-2014
- Ai Kayano
- Â Nana Hayashida / ... 21 episodes, 2013-2014
- Kaito Ishikawa
- Â Mitsuo Yanagisawa 20 episodes, 2013-2014
- Ibuki Kido
- Â Chinami Oka 18 episodes, 2013-2014
- Takahiro Hikami
- Â 2D-kun 17 episodes, 2013-2014
- Takayuki Kondô
- Â Kosshi-senpai 12 episodes, 2013-2014
- Satomi Satô
- Â Nana-senpai 11 episodes, 2013-2014
- Christina Marie Kelly
- Â Kouko 10 episodes, 2013
- Melissa Molano
- Â Linda 10 episodes, 2013
- Atsushi Kosaka
- Â Male Upperclassman A / ... 9 episodes, 2013-2014
- Itaru Yamamoto
- Â Fourth Year Student / ... 8 episodes, 2013-2014
- Adam Gibbs
- Â Mitsuo 8 episodes, 2013
- Junichi Yanagita
- Â Hosshi-senpai / ... 7 episodes, 2013-2014
- Saori Ônishi
- Â Female Upperclassman B / ... 7 episodes, 2013-2014
- Yûsuke Shirai
- Â Male Upperclassman B 7 episodes, 2013-2014
- Gareth West
- Â 2D 7 episodes, 2013
- Caitlynn French
- Â Chinami 7 episodes, 2013
- Takako Honda
- Â Banri's Mother 6 episodes, 2013-2014
- Ayaka Suwa
- Â Female Upperclassman A / ... 6 episodes, 2013-2014
- Elissa Cuellar
- Â Additional Voices 6 episodes, 2013
- Ned Gayle
- Â Additional Voices 6 episodes, 2013
- Sam Butler
- Â Additional Voices 6 episodes, 2013
- Saori Gotô
- Â Sao-chan 5 episodes, 2013-2014
- Shizuka Itou
- Â Shi-chan 5 episodes, 2013-2014
- Kyle Jones
- Â Additional Voices 5 episodes, 2013
- Josh Morrison
- Â Additional Voices / ... 5 episodes, 2013
- Joanne Bonasso
- Â Additional Voices / ... 5 episodes, 2013
- Alexandra Bedford
- Â Additional Voices 5 episodes, 2013
- Yûsuke Kobayashi
- Â Hairdresser / ... 4 episodes, 2013-2014
- Shizuka Ishigami
- Â Female Upperclassman D / ... 4 episodes, 2013-2014
- Taishi Murata
- Â Koba / ... 4 episodes, 2013-2014
- Natalie Jones
- Â Additional Voices 4 episodes, 2013
- Joel McCray
- Â Additional Voices 4 episodes, 2013
- Courtland Johnson
- Â Kosshi 4 episodes, 2013
- Nick Meriwether
- Â Additional Voices 4 episodes, 2013
- Tetsuo Kanao
- Â Koko's Father 3 episodes, 2013-2014
- Harumi Sakurai
- Â Reina / ... 3 episodes, 2013
- Rina Dendô
- Â Announcement / ... 3 episodes, 2013-2014
- Tomo Muranaka
- Â Female Upperclassman C / ... 3 episodes, 2013-2014
- Eiji Takeuchi
- Â Male Upperclassman C 3 episodes, 2013-2014
- Hironori Saitô
- Â Teacher 3 episodes, 2013
- Kengo Kawanishi
- Â Kazuya / ... 3 episodes, 2013-2014
- Yôhei Azakami
- Â Fourth Year Student / ... 3 episodes, 2013-2014
- Katelyn Barr
- Â Sao-Chan 3 episodes, 2013
- Natalie Rial
- Â Shi-Chan 3 episodes, 2013
- Kira Vincent-Davis
- Â Nana 3 episodes, 2013
- Juliet Simmons
- Â Additional Voices / ... 3 episodes, 2013
- Shannon Reed
- Â Additional Voices 3 episodes, 2013
- Robert Cardenas
- Â Additional Voices 3 episodes, 2013
- Ryôta Takeuchi
- Â Brother 2 episodes, 2013-2014
- Risa Taneda
- Â Recruiter 2 episodes, 2013
- Tôru Ôkawa
- Â Boss 2 episodes, 2013
- Rui Tanabe
- Â Junior Club Member 1 / ... 2 episodes, 2013-2014
- Ryosuke Kanemoto
- Â Koichiro / ... 2 episodes, 2014
- Haruki Ishiya
- Â First Year Student 2 / ... 2 episodes, 2013-2014
- Maina Shimagata
- Â Female Student 2 / ... 2 episodes, 2013
- Kanehira Yamamoto
- Â Policeman 2 / ... 2 episodes, 2013
- Scott Gibbs
- Â Additional Voices / ... 2 episodes, 2013
- Nathan Wilson
- Â Additional Voices 2 episodes, 2013
- Samantha Stevens
- Â Additional Voices 2 episodes, 2013
- Crystal Ruiz
- Â Additional Voices 2 episodes, 2013
- Maria Cuadra
- Â Additional Voices 2 episodes, 2013
- Meiko Kawasaki
- Â Nurse 1 episode, 2013
- Mai Nakahara
-  Fiancée 1 episode, 2013
- Megumi Okada
- Â Tesshi 1 episode, 2013
- Nobunaga Shimazaki
- Â Tomoyasu 1 episode, 2014
- Daiki Yamashita
- Â First Year Student 1 1 episode, 2013
- You Taichi
- Â Female Student 1 1 episode, 2013
- Shino Shimoji
- Â Female Student C 1 episode, 2013
- Jun'ya Enoki
- Â Su-san 1 episode, 2014
- Akari Harashima
- Â Female Student A 1 episode, 2013
- Yuko Iida
- Â Takeuchi 1 episode, 2014
- Yukiyo Fujii
- Â Abe 1 episode, 2014
- Seiichiro Yamashita
- Â Nakagawa 1 episode, 2014
- Kouji Takahashi
- Â Man A 1 episode, 2013
- Natsue Sasamoto
- Â Ito 1 episode, 2014
- Takumi Watanabe
- Â Hasegawa 1 episode, 2014
- Yumeha Kôda
- Â Tea Ceremony Club Member 1 episode, 2013
- Kenta Sasa
- Â Teacher 1 episode, 2014
- Mari Shiraishi
- Â Tea Ceremony Club Member 1 episode, 2013
- Gabriel Regojo
- Â Additional Voices 1 episode, 2013
- Ty Mahany
- Â Kouko's Father 1 episode, 2013
- James Marler
- Â Additional Voices 1 episode, 2013
- Orlanders Jones
- Â Additional Voices 1 episode, 2013
- Hannah Trum
- Â Additional Voices 1 episode, 2013
- Le Son
- Â Additional Voices 1 episode, 2013
- Samantha Stevens
- Â Additional Voices 1 episode, 2013