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Season guide

Insomniacs After School: Season 1

13 episodes Premiered Apr 11, 2023 Updated Jul 20, 2026
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Episodes

S1·E1

Capella

Apr 11, 2023 · 24 min

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.

S1·E2

Mu Scorpii

Apr 18, 2023 · 24 min

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.

S1·E3

Fomalhaut

Apr 25, 2023 · 24 min

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

S1·E4

Venus

May 2, 2023 · 24 min

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

S1·E5

Canopus

May 9, 2023 · 24 min

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.

S1·E6

Shooting Star

May 16, 2023 · 24 min

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.

S1·E7

The Fireworks Star

May 23, 2023 · 24 min

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?

S1·E8

The Congregation Star

May 30, 2023 · 24 min

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.

S1·E9

Altair and Vega

Jun 6, 2023 · 24 min

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.

S1·E10

Spica of Virgo

Jun 13, 2023 · 24 min

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.

S1·E11

The First Stars of Dawn

Jun 20, 2023 · 24 min

On the second day of their training camp, Ganta and Isaki's adventure begins with a trip to Mitsukejima.

S1·E12

Planet

Jun 27, 2023 · 24 min

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

S1·E13

Methuselah

Jul 4, 2023 · 24 min

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.