When Komari opened her eyes, she found herself in a place that was not the usual battlefield, but an even more absurd realm known as the "Other World." Along with Komari, Bill, Neria, and Estelle were also swept away to this Other World. The four of them decided to form a mercenary group called the "Komari Club" and began their journey through this unknown world. During their travels, they encountered a girl named Korette, who claims to know Bill.