keisuke sonoyama

Hana Yukawa is an ordinary office lady who can be found anywhere. She is tricked into joining a multi-level marketing company that hires people while hiding her true identity, and receives an unreasonable reprimand from her boss. She was deeply traumatized by a certain incident, but there was no one around her that she could talk to about it. Meanwhile, after seeing a popular YouTuber's introduction video, she becomes obsessed with the cult religion "Nirvana" in search of salvation for her soul.

Students, including Aoi Nishino, take part in class and sports activity at a prestigious high school. Aoi Nishino is a member of the school's archery club. He practices archery studiously and doesn't socialize much with the other students. His childhood friend Haruka Seno is also a member of the archery club, but she worries about Aoi Nishino. One day, thunder strikes the school grounds. After that, the ordinary lives of the students changes drastically. Many samurai descend on the school grounds. It appears that the entire school has traveled back in time to the Sengoku period. Making things worse, they realize that they are in the time right before the Battle of Okehazama takes place.

L’histoire se déroule au Japon en 2020. L’économie s’est complètement envolée et à Tokyo, la vie est devenue extrêmement chère. Kaiji mène une vie difficile dans ces conditions : il a beau charbonner dans son boulot, il n’écope à la fin du mois que d’une maigre paie, avec laquelle il peut à peine aller se payer une bière. Il découvre alors que son patron, Otsuki, s’en est mis plein les fouilles grâce à un réseau de jeux d’argent illégaux. Désormais président de la puissante compagnie Teiai, il entraîne Kaiji dans son monde afin que celui-ci participe à un jeu de grande envergure appelé la Tour de Babel.