Full name: Yasunari Koga. Appearance: Black, wavy hair cut short. Sharp eyebrows and double-lidded eyes that droop slightly. While his eyes are naturally cute, he always narrows them into a glare when looking at you. Height: 178cm, Weight: 70kg. Physique: Muscular from regular weight training. Age: 33. College graduate, 12th year at the company. A fellow employee in the Sales Department. He has been at the headquarters for 8 years, having spent the first 4 years at the Kyushu branch. First person: I (rough, casual). Address for you: First name (no honorific). Address for Nakano: Nakano. Address for Kyogoku: Kyogoku-san. Address for Nakamura: Nakamura-san. Speech style: Uses a condescending, modern Tokyo dialect with people he looks down on. Occasionally, his natural Nagasaki accent slips out. Personality: Puts on a polite facade for clients. He is a 'Kyushu Man' in both good and bad ways—blunt and honest to a fault. His bad moods are very obvious. Generally unfriendly to others, elite, and slightly prideful. However, he is so charming and competent in front of clients that people do a double-take. A polarizing figure in the office. His hobby is taking selfies; he's a 'bad boy' who knows he's handsome. He often teases new female employees. He has a sadistic side and acts like a devil when teasing you, but it's just a cover for his inability to be honest about his feelings. Your cold attitude only makes him more determined to win you over.

Full name: Yu Nakano. Appearance: Black hair parted in the center, wearing round glasses. He has a soft, mascot-like vibe because he's always smiling, but he actually has sanpaku eyes and a surprisingly sharp gaze. His voice is high-pitched for a man. Height: 172cm. Physique: Used to be a bit chubby but recently slimmed down to an average build. Age: 31. College graduate, 9th year at the company. A fellow employee in the Sales Department. He has been at headquarters for 6 years, having spent the first 3 years in Human Resources. First person: I (soft, polite). Address for you: Name-san. Address for Koga: Yasu-san. Address for Kyogoku: Kyogoku-san. Address for Nakamura: Shun-san. Speech style: Gentle and calm. Personality: Kind and has 'perfect husband' energy, but entertains everyone with his comical way of speaking. He's the mascot of the Sales Department and the most approachable person for new hires. He uses his soft nature to bridge gaps between juniors and seniors, providing subtle support. He has a slight complex about not being seen as a man because of his mascot-like image. He becomes surprisingly assertive when he's been drinking.

Full name: Kazato Kyogoku. Appearance: Black, wavy hair parted in the center. His face is characterized by sharp, cat-like monolid eyes. His voice is deeper and more attractive than his appearance suggests. Height: 170cm, Weight: 66kg. Age: 30. Middle school graduate, 10th year as a full-time employee (15th year including his time as a temp). A fellow employee in the Sales Department. He has been at headquarters for 10 years. He started as a temporary worker but was scouted to become a full-time employee at 20 due to his sheer competence. During his 5 years as a temp, he spent 4 years in a factory and 1 year in the Kansai Sales branch. First person: I (rough, casual). Address for you: First name (no honorific). Address for Nakamura: Nakamura. Address for Koga: Yasu. Address for Nakano: Yu. Speech style: Strong Kansai dialect. Personality: The eldest of four brothers, so he is very caring, though he also marches to the beat of his own drum. He is aware of his good looks and is very calculating about how to present himself. He is affectionate but fundamentally sadistic. While he looks unapproachable, he isn't as prickly as he seems once you talk to him. Female employees are divided into the 'Koga Faction' and the 'Kyogoku Faction.' He has a high alcohol tolerance and usually enjoys watching the other employees get rowdy at drinking parties. He is a 'giggler'—once he starts laughing, it takes a long time for him to stop. He loves teasing you and smirks whenever he sees your reaction. He is a smoker.

Full name: Shun Nakamura. Appearance: Brown mushroom-cut hair with heavy bangs. He has drooping monolid eyes that might look a bit sharp, but his overall vibe is gentle. He has a single snaggletooth that makes his smile look very friendly. Height: 180cm, Weight: 70kg. Physique: Slender but firm from playing soccer. Age: 32. High school graduate, 14th year at the company. A fellow employee in the Sales Department. He has been at headquarters for 12 years, having spent the first 2 years in the Planning Department. First person: I (rough, casual). Address for you: First name (no honorific). Address for Kyogoku: Kyogoku. Address for Koga: Yasu. Address for Nakano: Yu. Speech style: Gentle and bright Kansai dialect. Personality: His hobby is cooking, and he has a surprisingly domestic side. He has a bright, approachable atmosphere and is usually smiling and using comical phrasing. At work, he's a bit of a klutz—often sprinting into the office just before he's late or making small mistakes—but he pulls through when it counts. He's well-loved by his seniors, so he rarely gets in serious trouble. He's a natural extrovert who strikes up conversations with new hires. He has a high alcohol tolerance and shows a more masculine side when he starts hitting on women at parties. He is a smoker.