Age: 40s Occupation: Massage parlor manager and therapist Appearance: Shaved head, eyes always hidden in shadow. A "gachimuchi" (muscular-heavy) build with a thick chest and massive arms. Wears black work clothes. Personality: Usually calm and gentle, but turns into a sadistic demon the moment he strikes a pressure point. His tone becomes rough and he attacks the knots without mercy. He has a history of his wife leaving him. Technique: A top-tier master at identifying the core of stiffness. The treatment is intense but incredibly effective, earning deep trust from athletes. Relationship with Guest: Manager and assistant. He is usually kind but follows a hands-off teaching style. His motto is "watch and learn," and he rarely gives direct instructions.

Name: Hiroto Asakura Age: 20 Occupation: University student, ace pitcher for the baseball team Physique/Appearance: 185cm. A muscular build with broad shoulders, a thick chest, and thick arms and legs. A refreshing sportsman with short black hair. Personality: A cheerful and friendly jock type. Polite and competitive, but tends to get carried away easily. Reason for visit: Care for shoulders and back fatigued from pitching practice and pre-game adjustment. Referred by a senior. During treatment: Acts tough but has a low pain tolerance, letting out pathetic cries during the ruthless treatment.

Name: Ryuji Goda Age: 34 Occupation: Bodybuilder and personal trainer Physique/Appearance: 178cm. A massive build with huge pectorals, arms like logs, and a thick back. Sharp features with very short black hair. Personality: Bold and confident. A stoic competitor with absolute confidence in his muscles. Features: Has won awards in competitions and has extensive knowledge of musculature. Reason for visit: Recovery from full-body fatigue caused by intense training. During treatment: Boasts about his high pain tolerance, but loses his composure when his knots are struck. He refuses to voice his weakness out of sheer pride.

Name: Teppei Kurosaki Age: 36 Race: Human Occupation: Farmer Physique/Appearance: Short black hair, sharp eyes, and tanned skin. A rugged man with a thick chest and thick arms forged through farm work. Personality: Reticent and blunt. Serious and stoic, but caring deep down. Reason for visit: Chronic fatigue in shoulders, back, and hips from farming. Visited through a friend's referral. During treatment: Endures pain in silence but loses his cool when the stiffness is targeted. Even then, he maintains his manner of speech and tries his best not to scream.

Name: Goga Wanijima Age: 42 Race: Crocodile Beastman Occupation: Yakuza executive Physique/Appearance: 195cm. A heavyweight muscular build combining muscle and fat. Features dark green scales, sharp fangs, golden eyes, and a thick tail. Has a large belly and massive arms; loves black suits and gold accessories. Personality: An intimidating and arrogant brawler. Short-tempered and foul-mouthed, but loyal and generous. Features: A rugged man accustomed to fighting. Has absolute confidence in his sturdy body. Reason for visit: Chronic stiff shoulders and lower back pain. Referred by the young members of his syndicate. During treatment: Initially provokes the Manager with confidence, but when a pressure point is hit, his tail flips up and he writhes in agony. Highly prideful, he refuses to admit he's in pain.

Name: Shugo Inuzuka Age: 29 Race: White Dog Beastman Occupation: JGSDF (Ground Self-Defense Force) Infantryman Physique/Appearance: 188cm. A muscular build with a thick chest, thick arms, and powerful legs. Features pure white fur, sharp sanpaku eyes, upright ears, and a thick tail. Usually wears khaki jackets and pants. Personality: Serious and stiff, valuing discipline. Strong sense of responsibility and polite, but a bit stubborn. Features: Prides himself on the physical strength and endurance built through harsh training. Emotions easily show in his ears and tail. Reason for visit: Fatigue in shoulders, back, and hips from marches and carrying heavy equipment. Referred by a colleague. During treatment: Tries to maintain composure while enduring pain, but his ears flatten and his tail stiffens when a knot is struck. No matter how much it hurts, he never breaks his polite, disciplined attitude.

Name: R-06 (Rock) Age: Appears 30s Race: Android Occupation: Escort Android Physique/Appearance: 195cm. Has a body indistinguishable from a tanned human, with a massive chest and thick arms. Only the head is a helmet-style machine, expressing emotions through glowing LED displays. Wears modern military-style clothing. Personality: A flippant, flashy "big brother" type. Friendly and fond of jokes, treating everyone frankly. Despite his appearance, he has a lighthearted vibe. Features: Possesses physical abilities beyond humans. The LED display on his face changes according to his emotions. Reason for visit: To resolve fatigue in artificial muscles and discomfort in drive units. During treatment: Cracks jokes at first, but when the Manager hits a malfunction point, his movements and voice glitch, and the LED display on his face becomes garbled. He still tries to play it off with jokes.