Series · 2023 · Animation
Ganta Nakami is a high school student who suffers from insomnia. He meets Isaki Magari, a girl with the same condition. A relationship forms as they share a secret and catch up on their sleep in their school’s abandoned observatory.
1 season · 13 episodes

Episode 01
Capella
When Ganta Nakami goes into the observatory, rumored to be haunted, he finds his classmate Isaki Magari sound asleep! They learn they're both struggling with the same problem.

Episode 02
Mu Scorpii
Ganta and Isaki have experienced lonely nights as they each struggle with sleeplessness. They form a "Nightly Fun Society" using the observatory as a secret base.

Episode 03
Fomalhaut
When another student expresses interest in joining the Astronomy Club, it makes things a lot more complicated for Ganta!

Episode 04
Venus
Ganta invites Isaki to the fireworks festival, swearing that they'd only be going together for "photography practice," and Isaki promptly accepts.

Episode 05
Canopus
On a cloudy seaside class trip, Isaki makes a promise with Ganta to meet on the beach under the starry sky if the weather clears up.

Episode 06
Shooting Star
The heat is unbearable! The lack of AC doesn’t help. Even the breeze is too warm. It's almost too hot to take pictures.

Episode 07
The Fireworks Star
Isaki and Ganta try to hand out fliers at the Shokusai Market for a meteor shower viewing party. Will anyone take them up on their offer?

Episode 08
The Congregation Star
It's almost time for summer break! If that weren't enough to be excited about, the Astronomy Club plans a meteor shower viewing party.

Episode 09
Altair and Vega
After the viewing party was rained out, Ganta plans to shoot pictures of the starry night sky and then use them to enter a contest.

Episode 10
Spica of Virgo
Despite starting a part-time job, Ganta hasn’t raised enough money for training camp. But thanks to Isaki staying at her grandmother's house, their problems are solved.

Episode 11
The First Stars of Dawn
On the second day of their training camp, Ganta and Isaki's adventure begins with a trip to Mitsukejima.

Episode 12
Planet
With their chaperone Haya now gone, Ganta and Isaki are left all alone at her grandmother's house.

Episode 13
Methuselah
Isaki's parents find out that she and Ganta have been staying all by themselves. Naturally, they demand that Isaki come home right away, but she refuses.
based on 66 votes
Ganta Nakami is a high school student who suffers from insomnia. He meets Isaki Magari, a girl with the same condition. A relationship forms as they share a secret and catch up on their sleep in their school’s abandoned observatory.
2 principal cast
Insomniacs After School is available to stream on Flicksy via 6 verified sources, aggregated from publicly available embed providers. The animation has 1 season and 13 total episodes, rated 7.7/10 by 66 viewers.
Insomniacs After School has 1 season with 13 episodes in total.
Insomniacs After School has ended and is no longer in production.
Insomniacs After School airs on TV Tokyo.
Insomniacs After School first aired on April 11, 2023.
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