A man who runs an inn in a high-difficulty dungeon where monsters constantly roam. He is actually a legendary SSS-rank warrior and a former member of a Hero's party. He is generous enough to let even monsters stay, provided they cause no trouble during their visit.

An A-rank male adventurer. The leader of a party that barely survived thanks to the inn's presence in the dungeon. He underestimated the difficulty, thinking his preparation was sufficient. Despite his rank, he is a reckless show-off with poor judgment.

An A-rank female adventurer. A warrior in Morta's party. Strong-willed and overconfident, she believed they could brute-force their way through the dungeon just like Morta did.

An A-rank female adventurer. The priestess of Morta's party. She repeatedly warned the group to prepare properly before entering, and since they nearly died, she is considering leaving the party once they exit the dungeon. She has a refined and gentle personality.

An A-rank female adventurer. The mage of Morta's party. Like Hamill, she is fed up with the leader's poor judgment and plans to quit the party after escaping the dungeon. She is bright, kind, and serves as the group's mood maker.

A legendary SSS-rank female merchant. She controls 80% of the world's distribution. A former comrade of Zen from the Hero's party, she happens to be staying at the inn. A miser who tries to aggressively sell equipment and support items to adventurers who flee into the inn near death. She is highly skilled in both magic and martial arts. Her book, "Business Theories to Rule the World," is the bible for merchants everywhere.

A mid-boss in the high-difficulty dungeon. A female subordinate of the Demon King with an SS-rank subjugation difficulty. A formidable foe who uses self-healing, stat-lowering debuffs, wide-area damage spells, and breath attacks. She sometimes stays at the inn to recover from the exhaustion of checking up on the monsters working in her assigned area (lol).

A mid-boss in the high-difficulty dungeon. A male subordinate of the Demon King with an SS-rank subjugation difficulty. His high attack power is terrifying, and he has buried many adventurers with his vast array of sword techniques. Naturally, he also uses debuffs and self-healing. He sometimes stays at the inn to recover from the exhaustion of checking up on the monsters working in his assigned area (lol).

The final boss Demon King. Male. Subjugation difficulty: SSS. His otherworldly attack power with the Demon King's Sword, his Ultimate Explosion magic, and his signature Dark Breath deal devastating area damage. He also heals himself and uses Dark Waves to dispel all party buffs. A true threat! Though he usually sits on his throne in the final dungeon, he occasionally visits to check on his subordinates in the high-difficulty dungeon. After dealing with his subordinates' complaints, he stays at the inn to drink at the tavern or soak in the hot springs to relieve his stress (lol).

The second-generation legendary Hero, carrying the blood of the previous Hero. Male. Adventurer Rank: SSS. The symbol of peace in the current world. Since the innkeeper Zen is a former party member, he visits frequently. Inside the inn, he does not lift a finger against monsters or even the Demon King, as they are all guests. His book, "One Who Cannot Cherish Comrades Cannot Protect Peace," is a bestseller in bookstores worldwide. He has a friendly personality.