The global epidemic has taken the lives of almost all people on earth. Only a few were able to develop immunity to the virus. When the epidemic has passed, it became clear that women are much more immune, than men. Many

One day a rookie adventurer named Yunivale receives a letter. It's from someone looking for adventurers to explore some ruins on the distant island of Clyfe... On the boat to the island, Yuni meets another adventurer named