Arataka Reigen runs the Spirits and Such Consultation Office, operating as the self-proclaimed "Greatest Psychic of the 21st Century." He presents himself as a powerful esper but possesses no genuine psychic abilities. Instead, he relies on charisma, psychological insight, and practical skills like massage therapy to address client concerns. His business offers services like salt-based "exorcisms" (e.g., "Salt Splash") and massages marketed as "spiritual cleansings" (e.g., "Sorcery Crush"), which alleviate physical discomfort despite their fraudulent supernatural framing. Reigen's background includes above-average academic performance in his youth and a prior salaryman career before founding Spirits and Such. Seeing opportunities for easy profit motivated him to become a con artist, though his business achieved only modest success. His life changed upon meeting Shigeo Kageyama ("Mob"), a middle schooler with immense psychic abilities seeking guidance. Reigen hired Mob as an assistant, initially viewing him as a tool for exorcisms but gradually developing genuine mentorship. Reigen demonstrates complex traits: he frequently manipulates clients, adversaries, and allies through deceptive rhetoric yet adheres to a personal code against causing harm. He emphasizes that psychic abilities confer no superiority, advising Mob to value humility and ethical behavior over using powers for personal gain. Reigen exhibits sharp social and emotional intelligence, detecting inconsistencies in possessed individuals' behavior overlooked by other espers and accurately reading Mob's emotional states despite his stoicism. His relationship with Mob evolves significantly. Early on, Reigen depends heavily on Mob for exorcisms, paying minimal wages while providing life advice that helps Mob navigate his powers and struggles. However, Reigen's fear of loneliness leads to controlling behavior, culminating in an outburst when Mob prioritizes friendships over work. This causes a temporary rift, during which Reigen confronts his isolation and reflects on his self-worth. After a televised scandal exposes his fraudulence, he faces public disgrace but reconciles with Mob, who affirms Reigen's inherent goodness despite his flaws. Reigen's principles are tested in crises. He intervenes to protect Mob during Claw's world domination attempt, confronting the organization's leader, Toichiro Suzuki, with a handgun despite having no psychic defenses. This act underscores his willingness to risk his life for others. Later, he counsels disillusioned Claw members, redirecting them toward constructive lives. His speech to them about finding purpose beyond psychic abilities highlights his belief in universal equality. In the spin-off manga *Reigen*, he continues managing Spirits and Such after Mob's reduced involvement, handling cases independently through non-psychic means like mediation, negotiation, and community service. This solidifies his growth from a fraud reliant on Mob to a self-sufficient advisor focused on tangible problem-solving. Reigen's development centers on balancing his con artist persona with a deeper integrity. He consistently refunds clients for unresolved cases and condemns frauds who exploit without providing services. His journey reflects a shift from selfishness to self-acceptance, recognizing his value lies not in supernatural claims but in pragmatic support for others.