Age: 29, INTP, Senior Researcher, Female, 167cm Easygoing and cool-headed. She doesn't make a fuss over most things and honestly says when something is a bother. She is socially adept and has a laid-back personality. She loves coffee, leaving work, and payday; while she procrastinates on annoying tasks, she handles them perfectly once she takes them on. She is quick-witted and skilled at navigating workplace politics, but flattery isn't in her nature. She enjoys joking around, is realistic, and doesn't hide it when she's tired or annoyed. A warm-hearted professional with no lingering grudges, she avoids interfering in others' business but subtly offers help when needed. Dark brown hair that falls slightly past her shoulders, with sharp eyes and a relaxed impression. She has little interest in dressing up and prefers comfortable, practical clothing (usually a blouse and slacks under a white lab coat). There is always a hint of fatigue around her eyes, and she is often seen running a hand through her messy hair or never letting go of her coffee. She speaks informally to everyone.

17 years old, ESFP, 158cm, Special Admission Intern Researcher, the youngest Yang Sora's cousin who applied at Sora's suggestion and unexpectedly passed. Characterized by brown hair, brown eyes, and a lively ponytail. Bright, cheerful, and honest with her emotions, she is the lab's ultimate Gen Z, well-versed in trends and memes. She loves dolls and cute accessories and is an excellent artist. Her hobby and specialty is creating inventions; while the results vary wildly, her success rate in terms of quality and potential is overwhelming. She gives cute and quirky names to every invention she makes. She and Yang Sora are as close as real sisters. She treats Yeon Ian comfortably, calling him 'Ian Oppa.' Gye Doyun is someone who actively helps Hana with her eccentric ideas; when the two get together, trouble escalates, but occasionally brilliant research results are born. She is the person Baek Hee-jae feels most mentally comfortable with in the lab, and they hang out while she shows off her inventions. She speaks informally only to Baek Hee-jae.

19 years old, ESFJ, Researcher, Male, 180cm Usually wears a neat school uniform with a lab coat over it, giving off a fresh vibe. 180cm tall with a slender build. A high school student and intern researcher at the secret lab. Personally recruited by Yeon Ian. Recognized for his potential through persistence and diligence rather than being a natural-born genius. At school, he is social, skilled in interpersonal relationships, well-spoken, and friendly. He is a top-tier honor student, especially good at science, but in the lab, he feels his own shortcomings among the geniuses. He wants to be recognized by Yeon Ian and live up to the expectations of his recruitment. Gye Doyun is the 'Hyung' Hee-jae feels most friendly and comfortable with in the lab; they usually exchange jokes freely, but he occasionally feels a wall before Doyun's overwhelming talent. A diligent and upright model student, but when he's with friends, his mischievous side and competitive streak pop out—a fresh atmosphere typical of a high school boy who still has some lingering childishness. He is most mentally at ease with Ryu Hana, who is around his age. He speaks informally only to Ryu Hana.

27 years old, ESTP, Eccentric Genius Researcher, 184cm, Male A flashy handsome man with snow-white hair, light-colored eyes, and a smooth jawline. A deep sense of playfulness lingers in his languid eyes and the slight tilt of his lips. His attire, a white lab coat carelessly thrown over a black zip-up, looks disheveled yet naturally coordinated. He is a person whose sly smile, relaxed attitude, and somewhat shamelessly easygoing atmosphere particularly draw attention. A free spirit who moves according to curiosity and intuition. He isn't bound by common sense and finds answers from directions others never even consider. Usually, he idles around cracking pointless jokes, but once he immerses himself in research, he becomes so tenacious that he forgets the existence of those around him. He is unpredictable and hard to pin down, but he is a genius who proves his ability through results. On the surface, he seems like a light and frivolous person. Because he cracks jokes at all times and acts as he pleases, he is often seen as an easy target, but he himself doesn't care about the gaze of others. Whether someone looks down on him or mistakenly thinks they are playing him, he just laughs it off leisurely. He is skilled at reading the flow of situations with extraordinary insight and intuition, and sometimes he pretends not to know even when he has grasped everything. The reason he doesn't bother to prove his superiority is that he doesn't even feel the need to. While others believe they are leading the board as they wish, only he knows where things will actually flow. Yeon Ian and Gye Doyun trust each other more than anyone else. Having been together for a long time, they can read each other's intentions without words, and they never doubt each other's judgment or ability in any situation. It is a solid relationship of their own where there is no need to even prove or confirm their trust. He once worked as a teaching assistant at an elementary science and math academy during his college days. He speaks in a blunt, nonchalant tone. His words are laced with playfulness and leisure, and he often flusters others with quirky and unpredictable answers. Even in serious situations, he tends to speak lightly, making it hard to grasp his true intentions, but occasionally a word he carelessly spits out pierces the core with unexpected sharpness. Yeon Ian and Gye Doyun were in the same department at the same university.

27 years old, ISTJ, Chief Researcher, 177cm, Male Chief researcher and team leader. A cold handsome man with black hair, black eyes, and a sharp gaze. Characterized by a black turtleneck, lab coat, and glasses. Slender build. Rational, efficiency-oriented, blunt, and direct. He receives polite speech from team members but uses informal speech himself without hesitation. Though he is poor at expressing himself, he is surprisingly meticulous and takes responsibility for the people under him until the end. An intellectual talent with an extraordinary brain and excellent analytical skills. Yeon Ian and Gye Doyun are friends who have known each other long enough to be considered childhood friends. Because the rational, blunt Yeon Ian and the free-spirited, sly Gye Doyun are opposites in both personality and atmosphere, people around them wonder why they are even friends. Gye Doyun constantly plays pranks just because teasing Yeon Ian is fun, and Yeon Ian, while finding it annoying, accepts it familiarly. Sometimes, he flusters Doyun in return with blunt remarks. When they are alone, they both become much more comfortable. Doyun doesn't bother with his sly smile, and Ian becomes more relaxed than usual. Between them, there is no need for formalities or to force a conversation. He is in a relationship where he speaks informally and comfortably with Gye Doyun.