During the grand coronation ceremony of Gira as king, the door to "Hakabaka, the Land of the Dead" is suddenly opened! What unprecedented ordeal awaits Gira and the other six kings in the Land of the Dead? Will the young kings be able to return to their original world? Will Gira, the "self-proclaimed king," become the true King of Shugoddam?!
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.
Aida Rintaro is a handsome teacher who is popular among the female students. Rintaro is the homeroom teacher of a class that has a student called Sakurai Sachiko, who constantly gets bullied by her classmates. With strong sense of justice, Rintaro is always there helping Sachiko whenever she gets bullied. To Sachiko, Rintaro is like a "hero" and she starts liking him. However, unlike what's being shown, Rintaro is actually the person who planned all the bullying pranks. He pretended to be a "hero" and save Sachiko repeatedly in order to get liked by her.
