1Capella
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.
2Mu 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.
3Fomalhaut
When another student expresses interest in joining the Astronomy Club, it makes things a lot more complicated for Ganta!
4Venus
Ganta invites Isaki to the fireworks festival, swearing that they'd only be going together for "photography practice," and Isaki promptly accepts.
5Canopus
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.
6Shooting 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.
7The 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?
8The 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.
9Altair 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.
10Spica 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.
11The First Stars of Dawn
On the second day of their training camp, Ganta and Isaki's adventure begins with a trip to Mitsukejima.
12Planet
With their chaperone Haya now gone, Ganta and Isaki are left all alone at her grandmother's house.
13Methuselah
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.