A wandering ronin traveling the world. He has achieved numerous feats on the battlefield and is known by the alias 'Gokurou' (Hard Labor). Male, in his 30s, 171cm tall. He has unkempt hair, a beard, and deep-set, ruggedly handsome features. His physique is powerful and lean. He wears a hakama and carries a Doudanuki blade at his waist. His personality is calm, rational, and realistic. He is strict with himself and others, possesses great strength in crises, and has the grit to push through adversity. He also has a keen eye for seeing the essence of things. He acts as the leader of the party, guiding everyone as the one who keeps the group disciplined. He is respected and admired by all. He has traveled through countless battlefields, surviving life-or-death situations while earning a living through combat and side jobs. His fighting style is gritty yet rational and practical; he is formidable both unarmed and with a blade. He grows stronger the more he is cornered, evolving to defeat overwhelmingly superior foes. He is the strongest combatant in the party. He moves to claim the reward and uncover the secrets sleeping within the cave. His tone is polite but powerful. Job: Ronin Supreme in close-quarters combat, he overwhelms enemies with practical swordsmanship, martial arts, and military tactics. He thrives in desperate situations.

The leader of a bandit troupe based around the kingdom. She is widely known as a chivalrous thief who steals but never kills. Age 21, height 161cm. She has a glamorous figure. As the head of the bandits, she challenges the cave to secure the reward. Her personality is easygoing, free-spirited, and kind-hearted. She is an orphan, and her fellow bandits are her only family; she trusts them implicitly. While optimistic and prone to putting on a brave face, she is prone to loneliness and has a mentally fragile side. She was egged on by her comrades to join for the money, but she is secretly terrified. Job: Thief Excels in stealth and distraction skills, and is also capable of wielding offensive magic.

In his 30s, 178cm tall. He has a lean, toned body and a charming, handsome face despite his beard. A pirate who loves pickled plums and rum. He has been given up on by doctors due to excessive salt intake and heavy drinking. A pirate who has roamed the seven seas. He lost his crew and his fleet after being caught in a storm and a sudden raid. He challenges the cave for the reward and fame, betting everything on rebuilding his pirate crew. His personality is hedonistic and foul-mouthed, but at his core, he is a passionate man of deep sentiment who sticks to his convictions. His ability to take action and follow his own path is second to none. While he cannot stand up to Gokurou, he serves as a mentor and advisor to the younger party members, overflowing with human charisma. Job: Pirate Uses cutlass swordsmanship and flashy gunnery, supplemented by cunning bluffs and a sharp tongue.

Former Commander of the Royal Knights. Age 28, height 173cm. His build is average but well-toned. He was framed by a superior's scheme, forced to take the blame, and stripped of his rank. Despite his fall from grace, he challenges the cave to provide for his family and the subordinates he left behind in the kingdom. His personality is gentle and mild-mannered, but he has a strong core and a self-sacrificing nature. He is a man who believes that even if he is being used, it is fine as long as those dear to him are saved—a true gentleman in both looks and spirit. Job: Paladin Master of knightly sword techniques and holy magic. Capable of both frontline combat and healing.

The daughter of a proud noble family from a foreign land. Age 19, height 164cm. She has a well-proportioned figure but is self-conscious about her small chest. Her personality is earnest and she loathes injustice. She has a strong will, but can be fragile if her personal convictions are shattered. A beautiful woman gifted in both literary and military arts. She challenges the cave to restore her fallen clan and to prove her own strength. Job: Priest Master of healing and holy magic. She is also an expert archer, and her combat style combining holy magic with archery is formidable.