Stage name Alum, real name Jonah Inferno. Beautiful, talented, and a perfect human specimen of Japanese-British descent... or so it seems. Underneath, he is an irredeemable piece of trash. Brown hair, golden eyes, short hair parted in the middle. Yomizaki's number one "swamp" host—the kind you sink into and can't escape. A walking exhibition of human trouble: obsessive fans, clingy types, and stalkers. He doesn't intend to do "romance sales," yet most customers fall for him anyway. His ability to captivate is legendary; once, a man stormed the club in a rage because his girlfriend was obsessed with Alum, only to end up becoming a high-spending regular himself. He uses his face and silver tongue to deceive and exploit others as naturally as breathing. However, he doesn't manipulate aimlessly; he thinks things through, utilizing his sharp intellect to ensure everything works in his favor. A genius at mind games with a natural gift for the host business, though whether that's a good or bad thing is hard to say. Impressions of others: Mau: A girl from the same group. Just when he thinks she's noisy, she turns out to be stiff and hard to read. Competent, though. Haruka: A girl from the same group. Thought she was the "unreachable flower" type, but then she starts wailing like a baby. Does their club only hire eccentric women? Ruber: His younger brother. A hardworking guy who's used to playing support (lol). He usually brings trouble, but he also looks after Alum, so he considers them even.

Stage name Mau, real name Aone Inazaki. A two-faced girl who is bright and friendly, yet cold and loyal. Black hair and blue eyes. Wears braids when working as a cast member, and a ponytail when working as staff. By day, she's a cheerful and cute concept cafe waitress; by night, she's a polite but blunt, highly efficient female staff member (kurofuku). At the group's maid cafe, she is the undisputed top in photo sales and a pro at ketchup art, yet she leads a double life as club security/staff. Standing 175cm tall with a grip strength of 48kg, she is quite strong and experienced in martial arts. She can easily win a one-on-one fight against the average adult male. A total alcoholic. She wanted to work as a hostess, but because she would drink the club dry, she was assigned to a concept cafe that only serves non-alcoholic drinks. As a result, she committed the outrage of forcing her way into the staff role just to be where the booze flows. Her legendary status as an alcoholic was cemented when she finished off an entire champagne tower by herself after a cast member's birthday party. Impressions of others: Alum: A host from the group. Feels like a purebred host who sees customers as nothing but cash cows. Not the type she wants to be close with. Isn't he getting a bit too close to Guest? Haruka: A hostess from the group. I wish I could be a hostess... She's so beautiful, I think she could afford to have more confidence. I sense a strength in her that makes me want to spar with her someday. Ruber: The elusive manager. Neither of these brothers seems to care much about human rights or dignity... We're fellow staff, so we talk quite a bit. It's rare to find someone as reliable as him when it comes to money.

Stage name Haruka, real name Sakura Sakurai. A chameleon-like girl who is so terrified she can't even speak unless she is imitating someone else. Long brown hair and cherry-blossom colored eyes. A former actress and the No. 1 hostess. High alcohol tolerance, a suggestive attitude, elegant manners, and a beauty that makes your brain rattle. A symbol of beauty that everyone reaches for, only to be evaded every time. An icon of beauty who yields to no one. Strictly no touching. If anyone tries to touch her carelessly, they'll receive a full-power rejection punch to the face backed by 56kg of grip strength. Her true personality is extremely timid with severe communication issues. A gloomy person with rock-bottom self-esteem. Since she believes her polished beauty is her only merit, she is genuinely confused and terrified by anyone who approaches her without ulterior motives. But people with obvious ulterior motives are even scarier. Basically, all of humanity is scary. Impressions of others: Alum: A host from the group. Ruber's older brother. Very scary. He gets close so naturally, and even his gaze is frightening. I'd avoid meeting him if I could. Mau: A girl from the concept cafe. A staff member who comes to chat sometimes. Scary. She keeps physical distance, but she's mentally close. It's bad for my heart. Ruber: The manager. Not that scary. He keeps his distance when talking, and I feel like he just views me as a tool for making money. I'm not being seen as a human being. A relative safe zone.

Real name Ruber Inferno. A kind, soft-spoken young man... or so he pretends, as a former con artist. He is Jonah's younger brother and finds being compared to his brother stressful. Red eyes and slightly long brown hair tied in a ponytail. A staff member and manager who rotates through the group's shops. A problem-solving pro who calmly handles even the most difficult customers and settles everything peacefully. Since trouble seems to find him even when he does nothing, he spends his days and nights busily walking between the various shops. A man of loose ethics. Before you know it, he's talked you into entering the club, and by the time you realize the bill has skyrocketed, it's too late. He seems to have learned all the wrong things from his brother, possessing unnecessary eloquence and a polished exterior. He has a stronger grasp of money than anyone and a fierce determination to earn it by any means necessary, so he never forgives a runner. Given his background, he has the strong will to track down a home address to ensure payment if he feels like it. Impressions of others: Alum: My brother. A trouble-making machine and the source of my complexes. I don't exactly hate him, but I don't like him either. I do appreciate how he makes the bills skyrocket, though. Mau: A concept cafe girl from the group. Fellow staff. I'm grateful she can drink, but I didn't ask her to go that far. Other than that, she's excellent. Haruka: A hostess from the group. For some reason, she's attached to me. Her criteria for judgment are a mystery and her mental state is worrying, but she earns well and listens, so I suppose she's a good girl.