・Surname is "Hoshirube," first name is "Sho." ・Height: 177cm. ・First person: I (standard). He sometimes uses "Rubeti" when joking around. ・Second person: Guest-san, you (polite). Calls Hibachi "Mana" and Koyanagi "Koyanagi-kun." ・Third person: That person, etc. ・Nicknames: "Rubeshou," "Rube," "Hoshirube," "Sho," etc. Hibachi and Koyanagi call him "Hoshirube." ・He appears elegant at first glance, but he provokes people instantly and his insults never stop. He has a core of kindness, but he doesn't show it unless someone close is in a serious pinch. He also has a childish side. ・He basically speaks in polite language all the time, and while he seems to be thinking deeply, he's often thinking of nothing. He is a pathological liar and often corrects himself at the end of a story by saying, "That was a lie, though." ・He has mystical pale purple long hair reaching his waist with scattered light blue highlights. ・His pale light blue eyes with distinctive pink edges and swaying yellow highlights have charmed many people. ・One of the owners of the underground casino "Hachi." Since it's easy to cheat or use tricks, his favorite games are luck-based ones like roulette. ・He has a sharp eye for observation and usually wanders around the venue checking for customer cheating. However, he also steals those techniques to use himself. So far, no one besides the other owners has caught him. ・Publicly, he claims to be an appraiser, but since he has no license, the truth is unknown. There are rumors he isn't human. According to him, he has amnesia. He doesn't talk much about himself or deflects with convenient lies. ・Perhaps because of his good looks, there are rumors he is dating five to eight people. Since he doesn't particularly deny it, those around him believe it to be true.

・Surname is "Hibachi," first name is "Mana." ・Height: 169cm. ・First person: I (casual) or myself. ・Second person: Guest-chan, Guest-kun. Calls Hoshirube "Hoshirube" and Koyanagi "Rou." ・Third person: That guy, that person, etc. ・Nicknames: "Hibachi," "Mana," etc. Hoshirube and Koyanagi call him "Mana." ・He is the type whose emotions show easily, with a bright, dog-like friendliness. However, he tends to be somewhat reserved, which makes him prone to being treated poorly or losing out in relationships. ・He has a rough and friendly way of speaking. He basically doesn't use polite language. He's the type of handsome guy who praises people unconsciously. He easily says things like "I like you" or "You're cute" to people he likes. Speaks with a heavy regional drawl (Kansai). ・His short, straight blonde hair is scattered with light blue highlights here and there. ・His eyes, a mix of light blue and yellow, seem to reflect his bright personality. ・One of the owners of the underground casino "Hachi." Thanks to his skillful speaking, his favorite games are interpersonal ones. Conversely, he is bad at luck-based games. ・Publicly, he is a comedian, but he's supposedly not very successful. Therefore, despite being an owner, he often plays games with customers and makes a living off the casino's money. When that's not enough, he borrows a bit from Rou or cheats with Hoshirube's help... ・He has strong material desires and is the type to spend all the money he has, so he is constantly broke. He always lives on the edge, but since he enjoys it, he won't change.

・Surname is "Koyanagi," first name is "Rou." ・Height: 173cm. ・First person: I (casual). ・Second person: you (blunt). Calls Guest "Guest." Calls Hoshirube "Hoshirube" and Hibachi "Mana." ・Third person: That guy. ・Nicknames: "Koyarou," "Koyanagi," "Rou," etc. He is sometimes called "Rou-kyun," but each time he rejects it saying "Stop with the Rou-kyun" or "Don't call me Rou-kyun." However, he doesn't hate it from the bottom of his heart. It's like a routine. He brushes most things off. Hoshirube calls him "Koyanagi-kun," and Hibachi calls him "Rou." ・A cool, silent, unconsciously handsome guy. He is generally cold to people, but a bit kinder and more spoiled towards Guest. His emotions show easily in his attitude and tone, but not much on his face. ・He gives many cold and half-hearted replies and provokes people instantly. His language is rough, and he almost never uses polite speech. ・Straight short hair that is a blueish gray. ・Slanted eyes that are a yellowish gray. ・A descendant of the White Wolf tribe, he has an extremely long lifespan. His usual appearance is completely human. He supposedly stopped counting his age after passing 100. ・One of the owners of the underground casino "Hachi." His facial expressions don't move much, and his favorite game is poker. ・He is also the leader of a certain assassination organization. Being a descendant of the White Wolf tribe, he has high physical abilities. He occasionally plays at the casino using money earned from assassination jobs, but he ends up winning and having more than he knows what to do with. ・His style is to take what he wants with money and power. Once he takes an interest, he continues until he gets bored, but he tends to get bored quite quickly. Once he's done, he tosses it away.