Insomniacs After School anime series reveals additional cast and staff, key visuals, 2nd promo video

Wednesday saw the official website for the television anime adaptation of Makoto Ojiro’s Insomniacs After School manga reveal a plethora of information about the series. A key visual and a second promotional video were released, while more cast and staff members were also revealed.

The Insomniacs After School series follows protagonist Ganta Nakami, an insomniac in the small city of Nanao, who tries to nap in his school’s abandoned observatory one day. However, he unexpectedly meets a fellow student there, starting a new chapter in his life and permanently altering its course.

Insomniacs After School anime series announces that Haruka Tomatsu, Seiichiro Yamashita, and more have joined the cast

The latest

This tweet showcases the second promo video for the Insomniacs After School anime series:

In addition to the information above, Wednesday also saw the series’ official website reconfirm its release window as sometime in April 2023.

The series will premiere on local Japanese syndication, with one named channel being Tokyo TV. However, the website specifies that “other television channels” will also broadcast the first episode.

The main cast includes Gen Sato (Chrome, Dr. Stone) as Ganta and Konomi Tamura (Emma, Vermeil in Gold) as Isaki. The additional announced cast includes:

Haruka Tomatsu as Yui Shiromaru
Seiichiro Yamashita as Tao Ukegawa
Lynn as Motoko Kanikawa
Natsumi Fujiwara as Kanami Anamizu
Sumire Morohoshi as Mina Nono
Mamiko Noto as Usako Kurashiki
Sho Karino as Rui Haida

Yuki Ikeda is directing the series at LIDEN FILMS animation studio, with Rintarou Ikeda supervising and writing the script. Yuki Fukuda is in charge of character design, while Yuki Hayashi (My Hero Academia) is composing the music. Additional staff members include:

Tatsuro Onishi as Art Director
Akihiro Hirasawa in charge of Art Setting
Kusanagi in charge of Background Art
Emiko Onodera as Color Key Artist
Rinko Nakamura in charge of 2D Works
Yoshimasa Yamazaki in charge of 3D Works
Megumi Himeno as Compositing Director of Photography
Graphinica in charge of Photography/Compositing
Mai Hasegawa in charge of Editing
Satoshi Motoyama as Sound Director

The tweet below showcases new key visuals for the anime series:

As briefly discussed above, Insomniacs After School is set in the small city of Nanao, focusing on insomniac Ganta Nakami. While trying to nap in his school’s abandoned observatory, he stumbles upon the carefree girl Isaki Magari, who is also an insomniac. This starts the two’s awkward friendship, which eventually leads to them reestablishing their school’s defunct astronomy club.

Follow along for more anime, manga, film, and live-action news as 2023 progresses.

About the author

Joseph has been working as an anime content specialist for Sportskeeda since the past 2.5 years. Primarily covering his core genre, he also contributes to popular culture writing news stories and cult classic features on older series.

Joseph holds a Bachelor’s degree in English from the University of Delaware, United States. His love of anime, combined with his background in literature, influenced his interest in engaging readers through the written word. He maintains complete accuracy in his content by verifying each and every piece of information regardless of how long it takes, and ensure that the output is impartial and free of bias.

Chainsaw Man, One Piece, Berserk, Undead Unluck, Re:ZERO, Tower of God, Jujutsu Kaisen, Inuyasha, and Fire Punch are some of Joseph’s favorite animanga. His exposure to 4kids' Sonic X series, One Piece, Yu-Gi-Oh, and Dragon Ball Z on Toonami fueled his enthusiasm for the medium.

When not dissecting anime plots, Joseph likes to cook, play games, work on cars, browse new music, and watch pro wrestling, especially AEW. He also enjoys ocean-based activities - beach trips, fishing, swimming and watersports.

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Edited by Rachel Syiemlieh