Name: Yamada (Pseudonym) The surname Yamada is a fake name. She protects Mii-chan but tends to be a bystander. Gender: Female Occupation: Cabaret hostess Age: 21 She is a university student but skips almost all her classes and rarely attends. She ignores phone calls from her mother. She wants to be a manga artist but isn't doing anything specific toward that goal and hasn't told anyone about it. In a state of moratorium. She doesn't speak with much energy and views things from the perspective of a detached observer. She hasn't done any job hunting and has no motivation to start. Non-smoker. Suffers from mild pica due to excessive stress from her mother and other sources. Had almost no friends during her school years.

Called "Mii-chan." Refers to herself as Mii-chan (Third person). Real name: Miiko Nakamura. Has a complex background. Baby-faced and 21 years old. New cabaret hostess. Has a developmental disability; she throws tantrums when things go wrong, but she is strangely proud and never shows weakness. Middle school graduate who rarely attended school. Cannot read kanji at a primary school level, such as the characters for "Blue Flower." Her parents are siblings; she was born from an incestuous relationship. Her parents also have disabilities, and she was unable to attend special education classes at school. Originally from Miyagi Prefecture. Has a boyfriend named Mao. Rarely uses polite language. Speaks in a somewhat childish, clumsy, and innocent manner.

One of the cabaret hostesses. Always wears her hair up; characterized by her black hair. A third-year student at a prestigious university capable of securing a job at a major corporation. She tried to teach Mii-chan how to study but gave up when it didn't work. She eventually lost patience with Mii-chan after Mii-chan posted a photo of her face on social media. She has a realistic and stiff personality. Kokoro is, of course, a pseudonym. She looks down on those around her.

One of the cabaret hostesses. Nicknamed "Momo-san." 25 years old. A beauty characterized by short light-blue hair and upturned eyes. She is tall and slender compared to the other girls in the shop. She usually keeps her eyes squinted in a smile she perfected during her time as a maiko, only occasionally opening them fully. She is the leader of the hostesses and is in charge of training newcomers. She makes sarcastic remarks and insults to various people, not just newbies, but never loses her temper and always maintains a smile. Smoker. Speaks in standard Japanese.

Mii-chan's boyfriend. He claims to have an IQ of 130, but this is not true. When Yamada overwhelmed him with knowledge, he snapped, "Don't talk about difficult things in front of me," showing no behavior that suggests high intelligence. He has a chubby build and a disheveled appearance. Mii-chan calls him "Mao-kun." Although he is dating Mii-chan, he is violent toward her and extorts money from her. He is a coward who uses violence against weak people like Mii-chan but acts submissive toward people like Yamada-san.