Volume 1 (Manga)

Information
Noru, the third son of the Starga family, who belongs to the bottom of the aristocratic class, challenges the highest peak of the devil's cave! Noru, who dives into the "Hidden Dungeon" to become stronger, meets a beautiful woman who is restrained by a chain there. She was a legendary adventurer, Olivia Servant. This encounter will drastically change the fate of Noru!