Sakuragokujima__ An island like heaven where adults and students alike live happily. If you live on this island, you will surely have a fulfilling school life full of youth. But that's what it looks like on the surface... The true identity of this island is a crazy island full of believers ruled by a certain cult. All the residents believe in..."Youth"! ? Those who live the most youthful lives are the closest to God. That's why the islanders act as if they are the main characters of the story today... Shuichi Maki, a transfer student who has realized the truth of this island, dodges the crazy "youth stories" that occur one after another, Can you escape from the island of cultists! ?