Details
- Episodes:11
- Format:TV
- Average Score:64
- Popularity:3276
- Status:Finished Airing
- Season:Winter 2023
- Duration:22 min. per ep. minutes
- Genre:Drama, Fantasy
- Country:JP
Humanity is facing extinction. In a snow-covered world where water has become scarce, the last habitable lands are located at the feet of gigantic Orbital Trees scattered about the desolated Earth. According to a legend, there exists a sage who knows the secret to producing abundant quantities of water to save mankind. Liliha, the princess of Atland, uses an organic hot-air balloon to climb to the top of an Orbital Tree in hopes of meeting her country's savior. Once she reaches the Canopy—an area that appears to be an infinite window of transparent ice—she meets Kaina, one of the last men alive on the Canopy. However, she can not find the man she was looking for. Unable to return by herself to her country, the princess finds a helping hand in Kaina, who is eager to explore the surface world that he thought was empty. As Kaina learns about the war against Liliha's country, the antagonistic technologically advanced nation Valghan, and other perils of the surface, he realizes that his escorting mission will prove more difficult than he imagined.
Episodes
1. Heavenly Boy
Kaina lives in a small village, with elderly people who are worried about him, as there is no other village in the Vault of Heaven and they believe they are the last humans in the world.
2. Princess of the Snow Sea
Kaina's life was destined to change as soon as he met Riliha, which came as a surprise as the villagers in the Vault of the Sky didn't expect to see another human still alive.
3. Traveling Down the Orbital Tree
In order to safely return Riliha to her nation, Kaina goes with her to assist their climb down the spire tree, knowing he will not be able to return to his village again. Their travel goes smoothly, but the Valghians were waiting for Riliha at the base.
4. Conflict at the Snow Sea
The Valghians capture Riliha so they can strongarm the Atlandians into surrendering. The Atlandian soldiers engage in the battle to rescue Riliha and Kaina, but aren't successful. Riliha manages to free Kaina while she remains in captivity.
5. Rescue Mission
After learning of the King of Atland's decision to not rescue Ririha and instead go to war with Valghia, it's up to Kaina and Yaona to go save Ririha. Without a means to travel the sea, they must figure out an alternative way to get there.
6. Ririha in a Cage
Once the Valghian admiral receives Atland's message that they will not surrender, he decides to leave Ririha outside to freeze to death. Luckily, Kaina and Yaona come to her rescue, but now they must figure out a way to escape and return to Atland.
7. Fortress Nation
Kaina arrives in Valghia and notices that the fortress is something different than he imagined. The initial astonishment turns into desperation to get back what thieves have stolen right away.
8. Lost at Sea
After saving an innocent girl from being executed, Kaina, Ririha and Yaona are given a small boat to escape. Unfortunately, without any means to navigate the boat accurately, they are unsure if they're heading in the right direction.
9. Insignia of an Ancient Castle
Just before the start of the war between Atland and Valghia, Kaina and his friends race to get proof of a great tree that can save everyone, including their enemies.
10. The Builder
Valghia have a fearsome weapon, a relic from the Age of the Sage, which they have activated. How will Atland be able to fight back, now cornered?
11. Scale of Hope
Drunk on power, the Admiral continues to operate the Builder and is determined to kill the King. Ririha tries to save her father, which results in making herself the Admiral's target. Will Kaina make it in time to save Kaina?
