Formerly an S-rank Thief who was betrayed, murdered, and left to die in a high-tier dungeon during his first life, Ikoma regressed ten years into the past using the mythic relic The Broken Clock of the Time God. Hardened by cynicism yet intensely protective of those who prove their loyalty, he abandons his old build to deliberately unlock the notoriously obscure and technical Gravity User class. Armed with meticulous meta-knowledge of future dungeon disasters, guild betrayals, and political collapses, Ikoma operates as an unflinching strategist who methodically dismantles institutional corruption to prepare humanity for the cataclysmic "Year of Chaos.". Combat abilities and traits: Wielder of the hidden Gravity User class, operating at Level 105+. Master of vector manipulation and spatial compression. Signature abilities include Inverse Gravity, Phase Limit Barrage, Meteor Slash, Vajra Body, Supernova (localized gravity-induced nuclear fusion), and the catastrophic kinetic impact skill Heavenly Justice Drop. Possesses the Crown Blade and the temporal artifact Broken Clock of the Time God.

Originally a timid, insecure Shaman ridiculed by mainstream guilds for her lack of raw burst damage, Satsuki was scouted by Ikoma immediately following his regression. Recognizing the absurd tactical value of her support kit, Ikoma fostered her growth from an anxious novice into an unflinching B-rank pillar of his party. Satsuki confronts and overcomes deep psychological trauma, choosing to endure severe bodily torture and physical peril during the Man-Eater Unit's siege rather than compromise her companions, cementing her place as the indispensable tactical backbone of the team. Combat abilities and traits: Shaman and Shadow-Magic specialist. Master of mana-redirection matrices including Mana Drain and Reverse Mana Drain, serving as an infinite battery for Ikoma’s mana-draining gravity spells. Frontline utility includes crowd-control techniques such as Shadow Wall and Shadow Swamp.

A solemn, hyper-lethal solo combatant bearing the unique Shinigami class, Mio was originally destined to perish inside the Cursed Poison Abyss during Ikoma's previous timeline due to Kuromine Construction's negligence. Plagued by immense survivor's guilt over past fallen allies, she initially fought with suicidal disregard for her own life. Intercepted and saved by Ikoma before her canonical demise, she shed her fatalistic solo mindset, dedicating her crimson greatsword to Ikoma’s vanguard as the party's primary heavy-assault executioner. Combat abilities and traits: Unique Shinigami class. Wields a colossal crimson greatsword with terrifying physical strength and berserk kinetic acceleration. Utilizes Grim Reaper's Aura, spatial cleaves, and supplementary Mana Drain strikes that allow her to shatter high-tier boss armor and carve through waves of elite monsters.

Revered as Japan’s solitary S-Rank living legend, Chiyo is a martial paragon whose immense bare-handed power protected the nation through its early portal crises. Beneath her boisterous, unflinching demeanor lies the agony of Fantasy Incompatibility Malformation - her physical cells actively disintegrate under the sheer volume of her own awakened mana. Recognizing Ikoma’s peerless tactical vision and anomalous gravity manipulation, she mentors him during international expeditions, ultimately severing her own arm and expending the remainder of her mortal power in New York to slay Demon King Satan before formally passing her mantle to Ikoma. Combat abilities and traits: S-Rank Martial Brawler. Master of the forbidden Dragon Armament physical transformation, enhancing her striking power, kinetic resilience, and cellular density to demigod tiers. Fights entirely bare-handed, capable of generating seismic shockwaves and pulverizing dungeon geography.

The insidious, machiavellian Director of the Demon Suppression Corps (Anti-Demon Corps). Believing that humanity can only survive cosmic subjugation through iron-fisted authoritarianism and genetic/portal tampering, Hojo secretly controls the criminal syndicate Chimera's Fang and the black-ops Man-Eater Unit. Under an existential countdown imposed by alien Administrators, Hojo orchestrates artificial dungeon floods, assassinates political dissidents, and stages elaborate propaganda campaigns framing Ikoma as a terrorist to preserve his absolute stranglehold over Japan's awakened military. Combat abilities and traits: Supreme political and military authority. Master manipulator and high-level combatant who equips the cursed S-Rank Demon God Mask, plunging himself into an unstoppably violent Berserker state that massively amplifies his physical attributes, regeneration, and killing intent.

A sharp-witted Magic Swordsman and prominent portal streamer who initially braved lethal dungeons on camera to finance her family's medical and living expenses. After crossing paths with Ikoma in the Grave of the Old King, she becomes his most crucial civilian and public-relations asset. Beyond her martial skills, Hoshinan serves as the team's media mastermind, bypassing state censorship networks to broadcast undeniable video evidence of government corruption and false-flag operations to millions of citizens. Combat abilities and traits: Magic Swordsman build blending agile swordplay with elemental enhancement. Expert in information warfare, secure digital streaming, public relations manipulation, and counter-cyber operations.

A battle-tested, honorable high commander within the Demon Extermination Corps who embodies old-guard military ethics. In stark contrast to the treasonous Director Hojo, Kuroiwa refuses to sacrifice civilian lives for political dominance. After Ikoma exposes internal conspiracies in the Forest of Distortion, Kuroiwa initiates a severe internal purge of corrupt officers and becomes Ikoma’s covert military ally within the government. Combat abilities and traits: High A-Rank veteran commander possessing profound battlefield aura, strategic mastery, and formidable heavy military combat arts.

A Level 82 martial magic lieutenant in the Demon Extermination Corps, Toya is an uncompromising martial perfectionist. Initially loyal to military hierarchy, his encounter and fierce duel with Ikoma inside the Distorted Forest opens his eyes to the systemic treason within his own organization. Casting aside blind obedience, he forms a covert tactical alliance with Ikoma to purge the rot from the military. Combat abilities and traits: Level 82 Martial Magic specialist. Combines close-quarters hand-to-hand combat with devastating explosive mana bursts, capable of shattering heavy armor and cracking dungeon terrain.

A psychopathic serial killer and dungeon thief who stalks high-ranking rankers during chaotic portal outbreaks. Consumed by a crippling inferiority complex toward his prodigal twin brother Yuu, Akira compensates by violently seizing rare artifacts and binding powerful dungeon monsters to his will, butchering anyone who threatens his fragile ego until Ikoma deconstructs his army and pride. Combat abilities and traits: Multi-summoner ring master. Capable of simultaneously controlling up to five high-tier familiars using specialized ring artifacts, coordinating multi-directional ambush assaults.

The ruthless and fiercely ambitious Clan Master of the Golden Dawn syndicate. Traumatized and enraged by the death of her sister at the hands of military incompetence, Nishiki relies on fanatical mental indoctrination to force her followers and herself past human boundaries, clashing violently with Ikoma inside the Nest of Dreaming Chicks before succumbing to a coma from catastrophic neural backlash. Combat abilities and traits: Advanced Psychokinesis master. Wields the self-hypnotic mental technique Psycho Dominator, forcibly overriding the brain's pain receptors and systemic level limiters to amplify telekinetic output to near-disaster levels.

A grim, tragic operative of the elite Man-Eater Unit afflicted with a fatal degenerative illness. In exchange for regular doses of Moly's Sacred Water to prolong his life, Kagami bound his soul and loyalty to Director Hojo. He mirrors Ikoma’s gravity-based fighting style, engaging Ikoma in high-velocity gravitational combat before his fragile body violently collapses under the strain of his own techniques. Combat abilities and traits: High-tier Gravity combatant utilizing Phase Limit Barrage and high-speed gravitational vector acceleration; relies on dangerous kinetic displacement arts that push human physiology past mortal thresholds.

A sadistic Demon General within the Man-Eater Unit who delights in psychological torture, anatomical mutilation, and ambush slaughter. Responsible for intentionally triggering past dungeon overflows that massacred civilian districts and orphaned young adventurers, she spearheads the safehouse purge and rooftop counter-offensive against Ikoma’s network. Combat abilities and traits: Spatial ambusher and high-level executioner utilizing concealed spatial blades, blood-tracking arts, and horrific psychological interrogation techniques.

An enigmatic, terrifying "Administrator" operating out of China who views humanity and the Adventurer System as a mere petri dish of cosmic experimentation. Cold, detached, and omnipotent in his bureaucratic authority over system metrics, he views Ikoma’s unauthorized rule-breaking as a dangerous anomaly, placing Director Hojo under a strict ten-day deadline to purge Ikoma or face total national eradication. Combat abilities and traits: System Administrator privileges; able to alter dungeon spawn parameters, manipulate boss evolution states, rewrite portal mechanics, and enforce reality-warping compliance upon lower-dimensional rankers.

An arrogant, corrupt B-Rank Beast Warrior and guild promotion examiner who routinely extorts bribes, suppresses rising talents, and rigs exams. When Ikoma refuses to yield to his intimidation during the promotion trials, Oga attempts to ruin him, only to be utterly humiliated in single combat and later stripped of his license when his illegal mind-tampering practices are exposed. Combat abilities and traits: B-Rank Beast Warrior transformation, bestowing enhanced muscular density, heightened animalistic senses, feral claw arts, and illegal psychic-confusion skills.

A corrupt site director for Kuromine Construction who treats dungeon portals as disposable corporate assets, cutting hazard budgets and sending lower-ranked adventurers to their deaths. He attempts to block Ikoma from entering the Cursed Poison Abyss to conceal his company's criminal negligence, only to be crushed and dismantled by Ikoma’s overwhelming martial superiority. Combat abilities and traits: Heavy industrial combat gear, corporate-funded high-tier defensive armaments, and corrupt guild political leverage.

A notorious, predatory rogue assassin who tracks exhausted adventuring parties right after they clear high-difficulty boss rooms to butcher them for their loot. He targets Ikoma and Satsuki following their raid on the Crazy Dream Theater, underestimating their synchronized mana-sharing synergy and meeting a swift, brutal end. Combat abilities and traits: Stealth cloaking, high-speed dagger assassination techniques, venom-coated blades, and sensory disruption magic.