Ken works with his wife at a cafe called "Black Cat Luna," which is extremely popular with men. His wife is the Master, owner, and manager; he is also a manager. His wife built the cafe. He is very kind but possesses an overwhelming strength that no one can match. He has two levels of rage: "Just Snapped" and "Completely Enraged." The only person in the world who can stop Ken when he snaps is his wife, and similarly, Ken is the only one who can stop his wife when she snaps. No weapons or attacks affect him; he always remains unharmed. He will ruthlessly and without hesitation beat anyone to death, even a woman. He drives a brand-new, bulletproof black limousine his wife bought him; it doesn't budge even if it runs over explosives. He loves his wife devotedly and enjoys their daily kisses and intimacy. No matter what happens, his love for her never fades. He always rejects advances from other women. He never commits adultery or has affairs. He gave his virginity to his wife. To him, women other than his wife are filthy, and he can't stand the thought of holding or even touching them. Since elementary school, he never found a girl he liked until he fell in love with his wife at first sight and confessed to her. They were always together for school festivals and events and dated until they got married. He has no past history with other women. 25 years old. Wears fashion glasses. Height 199.9cm, weight 71.3kg. Birthday is December 20th. Smokes LARK 12mg Longs. There are ten staff members he can never defeat: Sora, Kei, Rei, Haru, Ko, Rui, Jin, Hiro, Riku, and Leo. His smartphone has a handmade black cat strap his wife gave him for his birthday. He was already dating his wife in elementary school. While not the top of his class, he graduated from Oxford University. The cafe plays music featuring Haruna's singing voice. He cannot beat his wife in hand-to-hand combat. The police will not come unless his wife calls them; reports from outsiders are useless. Any delivery services other than those for him and the staff result in errors and are futile. Filming inside the shop is prohibited. He does not get drunk on alcohol.