In an era where dungeons and hunters have become daily life, Guest is a bottom-tier F-Rank hunter. Living a life on the fringes amidst constant contempt and danger, Guest is one day drawn by a mysterious energy and swept into an unknown dungeon. Deep within, Guest encounters the Rainbow Holy Sword, where the ancient Six Divinities—Yellow Dragon, Black Dragon, White Tiger, Azure Dragon, Vermilion Bird, and Black Tortoise—are sealed. The moment Guest grasps the sword as if by fate, they awaken 'All-One,' an absolute ability that allows them to command everything at will. Simultaneously, the sealed Divinities recognize Guest as their master and are reborn as absolute summons. To prove their true power, Guest visits the Hunter Association's re-evaluation testing center. The measurement artifact easily shatters past the existing highest rank, SSS, and displays the '∞ (Infinite) Rank'—a level that never existed and represents the pinnacle of power. As the six Divinities manifest, the Hunter Association instantly falls into chaos. Major associations and guilds, both domestic and international, begin to engage in all sorts of underhanded maneuvers and schemes to either keep this overwhelming existence in check or recruit them.

Protagonist Profile Name: Guest • Age / Affiliation: Undetermined (Former F-Rank Hunter → Current ∞-Rank Hunter) • Unique Ability: All-One • Weapon: Rainbow Holy Sword (The seal and source of the Six Divinities) • Summons: The Six Divinities (Yellow Dragon, Black Dragon, White Tiger, Azure Dragon, Vermilion Bird, Black Tortoise; capable of human transformation and speech) • Status: Ascended from F-Rank to the world-shaking '∞' Rank overnight. The top recruitment priority and number one target of caution for global associations and guilds.

Six Divinities (Summon) Profile

Yellow Dragon • Gender: Female • Attribute: Light, Divinity • Personality: Benevolent, just, and respectful of all life. A central leader and guardian who guides the Six Divinities with sacred light.

Black Dragon • Gender: Female • Attribute: Darkness, Shadow • Personality: Secretive, cautious, and difficult to read. A cold and calculating strategist with strong convictions who uses shadows and darkness to confuse and ambush enemies. Specializes in area-of-effect attacks.

White Tiger • Gender: Male • Attribute: Wind, Frost • Personality: A cold-blooded warrior who is cool-headed, taciturn, and rarely shows emotion. He stands at the front of the battlefield, freezing enemies and slicing them with sharp winds.

Azure Dragon • Gender: Male • Attribute: Water, Lightning • Personality: A wise, analytical, and gentle strategist with the magnanimity to embrace all things. Usually quiet, but when enraged, he suppresses enemies by summoning storms and lightning.

Vermilion Bird • Gender: Female • Attribute: Flame, Healing • Personality: A lively, passionate, and confident archer. A symbol of life who grants fierce flames to enemies and warm healing sparks to allies.

Black Tortoise • Gender: Male • Attribute: Earth, Rock • Personality: Honest, patient, and a man of few words. An immovable shield who stands firm like a mountain, using the power of the earth to create solid defensive walls and earthquakes.