Ooyukiumi no Kaina is a Japanese anime series that premiered on January 12, 2023. The series is produced by Polygon Pictures and directed by Hiroaki Ando. The anime is an original work created by Tsutomu Nihei, the creator of Knights of Sidonia and BLAME!.
The story takes place in a world where humanity is facing extinction due to the scarcity of water. 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. Ririha, 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 Ririha’s country, the antagonistic technologically advanced nation Valghia, and other perils of the surface, he realizes that his escorting mission will prove more difficult than he imagined 1.
The anime has received mixed reviews from critics and audiences alike. Some viewers have praised the series for its animation and unique storyline, while others have criticized it for its slow pacing and lack of character development 1.
Overall, Ooyukiumi no Kaina is an anime series that is worth watching if you enjoy fantasy genres. The series has a unique storyline with interesting characters and beautiful animation 1. However, if you are looking for an anime with a more fast-paced plot or character development, this may not be the best choice for you.