Originally a brilliant, overworked corporate director killed in a devastating vehicular collision, Son Jinhyuk regresses to the year 1987 into his adolescent body. While his core longing is a tranquil, ordinary agrarian life surrounded by his living family, his fierce protective instinct and refusal to bow to injustice compel him to act decisively against corrupt institutions, criminal syndicates, and state-level conspirators. He balances razor-sharp business acumen with an unwavering, pragmatic moral compass. Powers: Peak Human Conditioning (sub-human sprint speeds, immense crushing grip, and explosive kinetic power), Perfect Temporal Foresight (total recall of historical macroeconomic, political, and cultural shifts), Master-Level CQC (Close Quarters Combat), Interrogation Techniques, and Metaphysical Willpower capable of rejecting supernatural entity binds.

Jinhyuk’s father, who survived his predestined maritime tragedy thanks to his son's direct intervention. Though presenting himself as a gentle, unassuming rural farmer, he harbors deep historical connections to the upper echelons of modern industry, having shared a profound, brotherhood-bound past with the founders of the Seik Group. He transforms from a passive survivor into the steadfast executive head of the family's agro-industrial enterprise. Powers: Veteran Agrarian Expertise, Deep Strategic Resilience, Resolute Paternal Willpower, and Latent Leadership Authority.

The commanding, far-sighted Chairman of the Seik (Sein) Group. Bound by a debt of gratitude and historical loyalty to Son Gwangyeon, Hong Gijun steps in to provide limitless financial, industrial, and political shielding for the Son family. Recognizing Jinhyuk’s unnatural strategic genius, he treats the boy not merely as a nephew, but as an indispensable counselor for national-scale corporate maneuvers. Powers: Vast Chaebol Financial Reserves, State-Level Political Leverage, Master Corporate Strategy, and Elite Industrial Logistics.

The refined yet fiercely determined daughter of Chairman Hong Gijun. Finding peace away from the stifling corporate pressure of Seoul during her stays in the countryside, she develops an unbreakable emotional bond with Jinhyuk. Prior to embarking on elite overseas academic studies, she solidifies her devotion to him, resolving to become a corporate titan worthy of standing at his side. Powers: High-Level Foreign Economic Acumen, Elite Diplomacy, Linguistic Fluency, and Chaebol Social Standing.

Jinhyuk’s younger sister, born into the altered timeline after his regression. Innocent, cheerful, and deeply perceptive, she serves as the heart of the Son household. Beyond her domestic warmth, she exhibits subtle supernatural sensitivities, displaying an intuitive connection to nature, animals, and latent spiritual phenomena that ease the metaphysical burdens surrounding Jinhyuk. Powers: Latent Spiritual Sensitivity, Empathic Calming Aura, Minor Vitality Harmonization, and Intuitive Threat Perception.

An ancient, enigmatic shadow entity operating beyond standard temporal dimensions. It attached itself to Jinhyuk during his regression event, casting metaphysical shackles across his soul and watching his struggles as an anomaly. It continuously tests Jinhyuk's resolve, only releasing its grip when Jinhyuk's sheer will proves capable of carving an independent path unguided by cosmic fate. Powers: Dimensional Tethering, Metaphysical Soul Binding, Omnipresent Shadow Observation, and Reality-Bending Imposition.

The fierce, fiercely intelligent family dog who acts as the primary domestic guardian of the Son homestead. Exceptionally loyal and attuned to hostile intent, Janggoon repeatedly intercepts physical dangers ranging from apex mountain predators to covert human infiltrators. Powers: Apex Canine Tracking, Enhanced Scent/Aura Detection, High-Bite Kinetic Force, and Fearless Combat Instincts.

A principled, exceptionally capable administrator whom Jinhyuk enlists to direct his national sports reform initiative. She acts as the public executive spearhead for Jinhyuk's non-profit foundations, managing legal structures and shielding student-athletes from predatory institutional abuse. Powers: Non-Profit Organizational Management, Institutional Legal Navigation, Public Relations Strategy, and Media Mobilization.

The aggressive ringleader of the regional 'Sixteen' delinquent organization, terrorizing middle schools and athletic teams through systematic extortion. His arrogance and reliance on gang violence crumble when he runs afoul of Jinhyuk's newly established class presidency. Powers: Street Brawling, Extortion Network Command, Intimidation Tactics.

A corrupt faction within the state intelligence agency (ANSP). Director Ba orchestrates illegal surveillance and abductions of key provincial figures for political leverage, deploying Operative Seokil’s black-ops tactical cell to execute the kidnapping of Jinhyuk's parents before being brutally dismantled. Powers: State Black-Ops Surveillance, Covert Infiltration, Military Firearm & Hand-to-Hand Proficiency, State Intelligence Clearance.