Accepting the support of Holy Princess Fiona for now, Seika and Amyu reach the free city of Rakana. A city of adventurers, Rakana sustains itself with resources from the surrounding dungeons. Soon after arriving, Seika and Amyu reunite with Yifa and Mabel and begin their lives as adventurers.

All is going well with the group's dungeon diving until an unexpected incident triggers a strange phenomena in the dungeons. Suddenly, the city of Rakana finds itself in grave danger, and Seika must make a crucial decision.