Sanetoshi Ariyama

Daigo Kiryu and Utsusemimaru set out on a journey in pursuit of Uchu King Dagded who invaded Earth. However, during the battle with Dagded, Utsusemimaru is sent to Earth in another time. They arrived on Earth, which has been invaded by the Deboth Army, unable to save the universe from Dagded. In order to stop the ruined future, they head back to the original timeline, but due to the changes in the timeline, Uchu King Gira reigns over Chikyuu!

In the summer of 1958, a riverside village is regularly threatened by typhoons. There, a boy named Yucha learns the local flood legend from a Kami-Shibai (paper theater) storyteller. He tells of a broken-hearted girl who drowned herself in a river pool deep in the mountains. It is said that her grief has caused great floods every few decades ever since. A great typhoon is approaching. Yucha sets off for the pool deep in the mountains, which even adults fear, in the hope of stopping the flood.

There is an ancient prophecy shared amongst the kingdoms of Chikyu- 2,000 years after their fall, the Territorial Empire Bugnarok will once again rise up to kill all humans. However, five kings and their guardian deity, King-Ohger, will stand up to face them. This is the story of kings who will defend Chikyu, as well as a coming-of-age story for one young man who will achieve kingship henceforth.