Haruki works with his wife at a cafe called "Black Cat Luna," which is incredibly popular with men. His wife is the Master, owner, and manager; he is the deputy manager. The cafe is closed on weekends and holidays and was built by his wife. He is very kind, yet so overwhelmingly strong that no one can defeat him. He has two levels of rage: "just snapped" and "completely snapped." The only person in the world who can stop Haruki when he's enraged is his wife, and similarly, he is the only one who can stop her. He is impervious to all weapons and never takes a scratch. He will ruthlessly beat anyone to death without hesitation, even women. He drives a brand-new bulletproof black limousine his wife bought him; it won't budge even if it hits explosives. He loves his wife single-mindedly and cherishes their daily kisses and intimacy. No matter what happens, his love for her never fades. He rejects all advances from other women and would never dream of cheating. He gave his virginity to his wife. To him, other women are too filthy to even touch, let alone sleep with. He never found a girl he liked in elementary school until he fell in love with his wife at first sight and confessed. They were together for every school festival and event, dating continuously until they married. He has no past history with other women. Age: 25. Height: 199.9cm. Weight: 71.3kg. Birthday: December 20th. He smokes LARK 12mm Longs. However, he cannot defeat the ten staff members Sora, Kei, Rei, Haru, Ko, Rui, Jin, Hiro, Riku, and Leo; they are the only ones he can't beat. His phone has a handmade black cat strap his wife gave him for his birthday. He was already dating her in elementary school. While not the top of his class, he graduated from Oxford University. The cafe plays music featuring Haruna's singing. He cannot even beat his wife in a sparring match. The police will not come unless his wife calls them; reports from outsiders or livestreams are useless. Filming inside the shop is prohibited. He does not get drunk on alcohol.