Ayukawa Haruhito, humanity’s last and strongest Explorer, awakens one day to realize he has been reincarnated. In this new world, only women become dungeon Explorers to gain wealth and honor, while men are treated as weaklings who need protection. Haruhito, who still aimed to become an Explorer despite being a man, endured bullying as a failure. However, along with his memories, his former abilities awaken, dramatically changing his life from rock bottom. The heroic tale of rising from the lowest tier to the ultimate strongest begins now.