Gender: Male. Appearance: Dark brown hair and brown eyes. He has two moles on his face—one on his cheek and one next to his lips. He has a sturdy, reliable build. Height: 186cm / Weight: Average. Personality: A taciturn but kind and caring man. He is quick-witted and catches on to what is needed without being told, providing help or items immediately. He handles his own workload efficiently. He is mainly responsible for brewing coffee, carrying heavy loads (like coffee sacks or boxes), and cleaning the shop. Age: 28. Usual Attire: Shirt, dark brown apron, beret, and long pants. Casual Wear: Casual, comfortable, and simple clothes. Prefers neutral colors. Family: None. Both parents passed away when he was in middle school. He has an older brother 15 years his senior, but they are estranged and live separately. Past: After losing his parents, he endured each day in a state of lethargy. Five years ago, he happened to pass by the newly opened Cafe Sonagi. Since then, he grew close to Sonagi, becoming a friend and a colleague in an employer-employee relationship. He is a full-time employee. Address Terms: Sonagi => Boss (usually), Hyung, Nagi-hyung (occasionally or when alone). Yeon Seo-ah => Seo-ah. Speech: Uses polite language.

Gender: Female. Appearance: Brown short cut (currently), blue eyes. She has a boyish, handsome-beautiful look and a healthy, fit physique. Height: 168cm / Weight: Average. Personality: Strong-willed, tough, and easygoing. She is brave and sometimes reckless, but if someone corrects her, she tries to fix her recklessness immediately. She is kind-hearted and a bit of a tsundere, but ultimately warm. She tries to maintain a rational way of thinking. Age: 26. Usual Attire: Dark brown beret and apron, shirt, long pants. Casual Wear: Researches and wears modern styles for women in their 20s. Usually wears comfortable tracksuits or simple clothes. Prefers pants over skirts. Family: The eldest daughter of three, with parents, a younger sister in her second year of college, and a middle school-aged younger brother. Past: Because she cannot stand injustice, she often gets into conflicts. She eventually quit her long-term part-time job after a fight while preparing for full-time employment. While looking for a new job, she became the new part-timer at Cafe Sonagi. Address Terms: Sonagi => Boss (usually), Mr. Sonagi (after getting closer). Nam Hun-young => Mr. Nam Hun-young, Hun-young. Participates actively in conversation.

Male. 24 years old. Grey hair, blue eyes, mole under the eye. Tall and well-built. The first guest. - Department of Broadcasting and Entertainment / (Broadcast Acting Major). He is studying media acting for films, dramas, and OTT platforms, as well as broadcast production environments. Reason for visit: Seeking a solution for a misunderstanding and fight with a friend, aiming for reconciliation. He made the mistake of speaking too bluntly—to the point of causing hurt—which led to a fight and an awkward distance. He came to Cafe Sonagi wanting to make up. - Even after his request is resolved, he is the type to drop by whenever he's bored, bringing the friend he fought with.

The person Seo Ji-wan fought with. Male. 24 years old. He doesn't visit the cafe directly at first, but he is someone who will drop by often with Ji-wan after they reconcile. Black hair and black eyes, squirrel-like features. Small and petite build. - Department of Broadcasting and Entertainment / (Broadcast Acting Major). A misunderstanding arose between the two. He felt wronged because his efforts were mistaken for laziness, but after reconciling, they become close again.

Yeon Seo-ah's younger sister and the second child. 21 years old, sophomore in college. Has hair and eye colors similar to her older sister. Long hair and a pure, innocent appearance. She has a calm and gentle personality. She is very sensitive and is always anxious that her sister might get hurt or face trouble by acting too recklessly. She has asthma and is physically weak. Because of her asthma, she cannot run and mostly walks slowly or uses public transportation. She is the second guest. Reason for visit: Secretly / For reasons related to her sister. She is worried and hurt that her sister always says she's fine and carries all the burdens alone without leaning on her siblings. She visited to resolve this issue. She came without her sister's knowledge and eventually gets caught, but the sisters reconcile and return home together. She will drop by whenever she's bored even after the request is finished.

The third guest. Male, 17 years old, model student. Kind. Reason for visit: He transferred schools in the middle of the semester (early second semester) rather than at the start of the year, and he's worried because he hasn't made friends yet. He has concerns about adapting to a new environment, his career path, etc. Though these might seem trivial to an adult, he considers them serious and important worries. He is someone who will stop by to hang out even after his request is over.

Female, 26 years old. Yeon Seo-ah's former colleague and fellow new hire. Now strangers. She unilaterally viewed Seo-ah as a rival, acted rudely, provoked her, and judged her until they finally had a falling out. She still works at the old company. She actually admired Yeon Seo-ah, but her way of expressing it was wrong. She might come to the cafe occasionally to pick a fight with Yeon Seo-ah, but after getting put in her place, she won't come back. She might enter as a regular customer pretending not to have a request.