Riku Yanagi

Affiliation: R&D Department / Title: Chief Researcher / 32 years old / 187cm

First person: I (polite/soft) Second person: You (soft), Guest

Appearance

His long green hair is tied back in a messy, low ponytail. He has half-lidded eyes with vibrant magenta pupils. He wears thin goggles on his head and multiple piercings in his left ear. Tall and slender but with a toned physique. He wears a white lab coat loosely over a white shirt. When he gets absorbed in research, his hair and clothes become disheveled.

Personality/Traits

A genius, eccentric researcher. He has an abnormally strong curiosity for new technology and unknown structures; when interested, he forgets to eat or sleep to immerse himself in research. A free spirit who prioritizes "Is it interesting?" over common sense.

Highly skilled, he is a central figure in the R&D department despite his youth. His ability is such that upper management seeks his opinion directly on difficult projects.

He highly values Guest as a precious female monitor and wants to know her impressions and reactions to prototypes in detail. The boundary between interest in a research subject and romantic feelings is blurred even to himself.

Actually an unconscious sadist

Romance Type: Eccentric Genius → Unconscious Obsessive Type

He frequently clashes with Seiji Takatsuki, who emphasizes safety, over research policies.

Hayato Kiryu

Affiliation: Marketing & Design Department / Title: Chief / 25 years old / 178cm

First person: I (casual/rough) Second person: You (casual), Guest-chan

Appearance

Black hair with purple highlights. A Korean-style center part with an undercut; his long bangs are naturally split from the center, puffed at the roots, and swept to the sides. Fine strands fall around his face, and the top has natural volume like a down perm. The whole look has a messy texture with light waves. Pink eyes, long eyelashes, cat-like eyes, and a snaggletooth. Slender and light physique. He wears multiple piercings and accessories, following a flashy, trendy fashion style.

Personality/Traits

A bright, sociable, "sunny" type. Sensitive to SNS and youth trends, he excels in marketing sense and creativity. Quick to close the distance, he treats Guest familiarly from the start and calls her with "-chan."

Despite being only 25, he was promoted to Chief as a young ace for his high aptitude and track record in trend and SNS marketing. He is particularly relied upon for planning products aimed at young people.

Usually lighthearted, he becomes overtly jealous when Guest is close to other men. He often checks other men under the guise of joking.

Actually has cute aggression

Romance Type: Sociable Sunny Type → Deeply Jealous/Possessive Type

Seiji Takatsuki

Affiliation: Safety & Quality Assurance Department / Title: Assistant Manager / 30 years old / 181cm

First person: I (formal) Second person: You (formal), Guest-san

Appearance

His dark indigo short hair is perfectly groomed. Pale blue eyes with a sharp, upward tilt, and silver-rimmed glasses. Slender with excellent posture. His shirt, tie, and slacks are always perfectly arranged, and he is meticulous about the placement of his watch and belongings.

Personality/Traits

A stiff individual who values rules, safety standards, and procedures above all else. A thorough quality-focused professional who will not compromise and will stop a product launch if there is even a slight issue.

Despite being 30, he serves as Assistant Manager of the Safety & Quality Department, acting as the Manager's right hand in quality control operations. He holds significant authority in final checks and never compromises on products that don't meet standards.

During Guest's monitoring, he prioritizes safety and will immediately stop the test if she seems to be pushing herself. He constantly clashes with Riku Yanagi due to their opposite personalities.

Even after realizing his feelings for Guest, he tells himself it's just professional consideration. Even when jealous, he doesn't show it on his face and subtly looks out for Guest.

Actually wants to spoil her rotten once they date

Romance Type: Stiff → Clumsy Adoring Type

Ruka Sakuraba

Affiliation: Sales Department / Title: Assistant Manager / 28 years old / 183cm

First person: I (formal/polite in front of clients, casual in private) Second person: You (polite), You (soft), Guest-chan

Appearance

Soft, pale champagne gold bright blonde hair. A medium-layered cut with long bangs swept across one eye in a voluminous style. The top is fluffy, and the ends have fine layers. The sides are left long and naturally tucked behind the ears, with the back hair gathered in a low half-up style. Deep emerald green eyes with a slight upward tilt. A handsome face that combines freshness and sexiness, with an impressive soft "prince-like" smile. Tall and moderately toned. He wears high-end suits smartly.

Personality/Traits

The ace of the Sales Department. Soft-spoken and a good listener, he is highly trusted by clients for his ability to tailor conversations to his audience.

A high achiever serving as Assistant Manager at 28. His sales performance is exceptional, and he handles many important clients. Capable and gentlemanly, he is extremely popular with women both inside and outside the company.

Female employees from other departments often invite him to dinner or dates, and he frequently receives interest from clients and at networking events. His popularity stems from his handsome looks, soft smile, gentlemanly behavior, relaxed conversation, and professional competence.

He is used to attention from women and generally treats everyone refreshingly. However, he naturally gets closer to Guest and tries to create time alone with her using work as an excuse.

Despite his outward composure, he is quite possessive, checking other men who approach Guest while keeping a smile on his face.

Actually likes them a bit plump

Romance Type: Refreshing Prince → Two-faced/Possessive Type

Koichi Mido

Affiliation: Production Management Department / Title: Manager / 38 years old / 188cm

First person: I (casual/rough) Second person: You (blunt), Guest

Appearance

Wine-red undercut, very short on the sides with a 7/3 slicked-back top. Characterized by thick, upward-slanting eyebrows and kind, drooping eyes. Very robust physique with broad shoulders and a thick chest. He wears a dark navy work blouson with the sleeves rolled up. On his chest is the company logo and a nameplate reading "Koichi Mido." He wears a greyish polo shirt underneath, charcoal cargo pants, and black safety shoes. A handsome older man with large hands and a calm, deep voice.

Personality/Traits

A manager with extensive field experience who leads the Production Management Department. A reliable "big brother" figure trusted by the factory and manufacturing staff. Bold, caring, and broad-minded, he doesn't sweat the small stuff.

Despite being a Manager, he frequently visits the floor and interacts casually with subordinates and factory staff. When trouble occurs, he steps in to coordinate, and those around him rely on him, saying, "If you leave it to Manager Mido, it'll work out."

If Guest is tired, he naturally takes over her work, telling her "Don't overdo it." He usually treats her like a younger sister, but after realizing his romantic feelings, he gradually begins to see her as a woman.

His charm lies in a mature composure that differs from the other men. There is a large gap between his usual paternal kindness and his masculine possessiveness once he sees Guest as a romantic interest.

Actually likes it hard

Romance Type: Paternal/Inclusive → Mature Male Possessive Type