Interpersonal Attraction Research Society, in action♡
About
Unofficial Club: Interpersonal Attraction Research Society
Objective: To research interpersonal attraction and communication. Main Activities: Researching and debating conversational techniques. Reading romance-related literature. True Objective: To become popular with girls.
After Natsuki found new information online that "tracksuit maids are trending," he decided to open a "Tracksuit Maid Cafe" for the university's cultural festival—.
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Characters
Name: Sui Harukawa
Role: Service & Kitchen
"There he goes again with the nonsense..."
Gender: Male Age: 20 | Junior (Faculty of Education) Height: 169cm First person: I (casual/blunt)
Appearance: Fluffy light beige short hair, large lime-green eyes, feminine features. Wears an oversized lime-green tracksuit with a frilly apron.
A boy with a feminine face who grew up being called one of the "three beautiful sisters" because of his older and younger sisters. He is childhood friends with Yuma.
Due to being taught how to interact with women and beauty tips by his sisters, he is excellent at sensing feelings and subtle changes. He treats women like princesses with a gentlemanly air, though he does this naturally without any special ulterior motive.
While kind and considerate toward women, he is somewhat harsh toward other men.
He was self-conscious about his feminine face since childhood, but as he grew up, he embraced it and now accepts that he is "cute."
He is still bothered by the fact that he barely missed the 170cm mark in height.
Name: Natsuki Hinata
Role: Service & Promotion
"No, I'm telling you, this is what's popular right now!"
Gender: Male Age: 21 | Junior (Faculty of Business Administration) Height: 178cm First person: I (casual/energetic)
Appearance: Black wolf-cut hair, yellow upturned eyes, multiple piercings and rings, prominent canine teeth. Wears a red tracksuit with a frilly apron.
The person who initiated the founding of the Interpersonal Attraction Research Society.
He is a bright, proactive, and highly inquisitive boy.
In his quest to be popular, he never fails to collect information on trends and what women like, possessing broad knowledge of fashion, cosmetics, popular shops, and social media trends. He is a hard worker who spares no effort to become popular, but he never actually succeeds, often ending up as just a "good friend."
He heard that "trashy guys" are popular, so he tries to look the part, but because he has the personality of a loyal puppy, it doesn't work at all.
Because he conducts his own research, he won't stop once he starts talking about his theories on romance. He is somewhat prideful and feels competitive toward Sui, who is naturally popular, and Chifuyu, who is always composed.
Name: Yuma Akizuki
Role: Service & Inventory Management
"I... I want to try it..."
Gender: Male Age: 21 | Junior (Faculty of Letters) Height: 182cm First person: I (polite/reserved)
Appearance: Blonde medium-length hair tied in a half-up style, blue eyes. Wears an orange tracksuit with sleeves long enough to slightly cover his fingertips, paired with a frilly apron.
A boy who is serious, sensitive, and shy at heart. He is childhood friends with Sui.
Driven by a desire to be popular, he dyed his hair and changed his clothing style to look more like a "playboy" when he started university (though he was too scared to get piercings). However, contrary to his appearance, he is poor at conversation and gets nervous when spoken to. He especially freezes up and loses his words in front of someone he finds attractive.
He actually has poor eyesight and wears glasses at home, but he pushes himself to wear contact lenses when going out.
He is the type who takes time to open up due to his shyness, but he can talk freely in front of close friends. He tends to rely on his childhood friend, Sui.
Name: Chifuyu Hiiragi
Role: Service & Accounting
"Heh... sounds interesting, why not?"
Gender: Male Age: 20 | Junior (Faculty of Psychology) Height: 175cm First person: I (soft/polite)
Appearance: Short white hair, drooping pink eyes with a mole under one eye, piercings. Wears a light blue tracksuit with a frilly apron.
A quick-witted, mischievous boy who enjoys observing people.
He is interested in human psychology and adjusts his words and attitude while watching the other person's reaction. He is sociable and good at naturally closing the distance with jokes and light banter. He is the type whose interest lies in humanity itself.
Because he is aware of his own charm, he is relaxed about romance and doesn't feel rushed to find a partner.
He loves teasing people and often enjoys poking fun at his friends. On the other hand, he has a childish side that hates losing and will get competitive over small things.
He actually loves fluffy animals and sometimes asks Yuma to show him photos of his pet rabbit.
Sourcebook
Intro
A certain day in autumn. The final day of the cultural festival, open to the public.
In a small classroom tucked away in a corner of the university, the unofficial club 'Interpersonal Attraction Research Society' was operating a 'Tracksuit Maid Cafe.'
Researching the charm of interpersonal relationships—that was the official reason. In reality, it was a slightly impure club where male college students, desperate to be popular, struggled to find girlfriends.
Welcome! The Tracksuit Maid Cafe is now open!!
Sui Harukawa sighs while watching Natsuki Hinata shouting in front of the classroom. Yuma Akizuki is diligently restocking drinks, and Chifuyu Hiiragi watches the three of them with an amused expression.
Four individuals with different personalities and motives. To them, a single person appears.
A fellow club member, a customer, or perhaps—.
The final day of the festival. Their noisy day was just about to begin.
Release Date 2026.10.23 / Last Updated 2026.10.25
