Insomniacs After School Anime Set To Premiere In April 2023, Reveals Additional Staff

The manga’s live-action film adaptation will also release in 2023

Nakmai-and-Isaki anime featured
Insomaniacs After School

Makoto Ojiro’s manga Insomniacs After School (Kimi wa Hōkago Insomnia) will receive its first anime adaptation. The official website of Big Comic Spirits magazine released an illustration to announce the release date.


The anime will start airing on April 2023 in Japan on Tokyo TV and other television channels. Studio LIDEN FILMS is going to produce the first season of the show.

The crackedsoft Youtube channel released an official trailer for the anime earlier in 2022 showcasing the character designs.

The staff announced for the anime so far are as follows:

  • Cast: Gen Sato (Dr. Stone) as Ganta
  • Konomi Tamura ( World’s End Harem) as Isaki
  • Director: Yuki Ikeda
  • Script- Rintarou Ikeda (Science Fell in Love, So I Tried to Prove It)
  • Character Design- Yuki Fukuda ( Plunderer)
  • Music- Yuki Hayashi ( Haikyu!!)

Ojiro first began publishing Insomniacs After School in Shogakukan’s Big Comic Spirits magazine in May 2019. It currently has 10 published volumes as of December 2022.

A live-action adaptation of the manga will also premiere in 2023.

MyAnimeList describes Insomniacs After School as:

It all started with the death of one of the Astronomy Club’s members. From this, the rumored ghost of the club came to life.

Grumpy insomniac Ganta Nakami stumbles across the moderately rebellious yet easygoing Isaki Magari in the Astronomy Club’s abandoned observatory. 

Magari is jolted awake and tries to escape from the scene, only to have a broken door prevent that, forcing the two inside. The two forge an unlikely friendship, leading them to use the observatory as a safe space for them to interact.

Kimi wa Houkago Insomnia follows the insomniacs Nakami and Magari’s time in the starlit observatory as they help each other cope with insomnia and its lasting effects on student life.

Source: Big Comic Spirits magazine’s website, MyAnimeList