The fate of mankind is doomed in the early 21st century due to losing "purana," an essence of living force supporting all life forms. Not willing to witness the extinction of mankind, a vampire named Duo disclosed the secret of purana to humans, saving the latter from destruction. However, just like Prometheus in Greek mythology got punished for bringing fire to mankind, Duo is punished for breaking the taboo. The vampire sent to punish him is Zieg, Duo's best friend, or, more than the best friend.

Koto unknowingly seals away the Sun Goddess Amaterasu, and now she is in a different world and can't return. Meeting priestesses who combat the evil in this strange place she learns that Black Towers throughout the land keep Amaterasu sealed away and are guarded by evil monsters. Koto must now find a way to help defeat these monsters and return the world to the way it was. (Source: ANN)

It can be rough transferring to a new school—even more so if you don't want to make any friends, like Nobuaki Kanazawa. But the reason for his antisocial behavior soon becomes clear when his class receives a text from someone called "The King." Included are instructions for the "King's Game," and all class members must participate. Those who refuse to play, quit halfway, or don't follow an order in the allotted time of 24 hours will receive a deadly punishment.

Having played the game before and watched as those around him died, Nobuaki tries to warn his clueless classmates. Unfortunately, they only believe him after the King's Game claims its first casualties. Stuck in a horrific situation with no chance of escape, Nobuaki has a choice: put his own survival above those around him, or do what he couldn't before and save his classmates.

[Written by MAL Rewrite]

A daily eating life happening at a street that seems like Hakata but not Hakata!? Fairy of Mentaiko "Pirikarako-chan" goes around the street to solve (?)!