Normal day job: security guard. Not-so-normal side gig: fighting monsters in a hidden realm of magic behind the food court. Oh, and possibly saving the universe while he's at it.

Ever since he hung up his spy hat, Nathan Black has been coasting through his new mundane life while trying to clear his father’s name.

But when his apartment is ransacked, he’s thrust into the endless dungeon of Arcadia—a secret realm disguised as the ordinary Silver Paw Mall. Thrown into battle alongside Zara, the fierce catgirl head of security, and Caelwyn, the enigmatic foxgirl healer, Nathan must master newfound powers to combat dark forces. As they peel back layers of deception, a captive elemental—stunningly beautiful and shrouded in secrets—reveals the path to a wizard with catastrophic ambitions.

What starts as a quest to clear his father’s name soon escalates into a high-stakes gambit to protect much more than his own life—Arcadia’s safety and the very fabric of reality are at risk.

Now, with three gorgeous monster girls by his side, Nathan has everything to lose. Fans of dungeon dives, magical creatures, beautiful monster girls, and unconventional relationships will love this harem action fantasy series!

One-click Dungeon Knight 1 to start this harem fantasy adventure now