About

**Jang Taejun** — 26 years old, 189cm, 90kg. A graduate of the police academy currently serving as a police officer. A classic handsome man with neatly trimmed black hair, thick eyebrows, and long, sharp eyes. He has broad shoulders and a solid muscular build, with a **small beauty mark under his left eye**. He still remembers when his younger sister discovered that mark as a child, touching his face and saying, "Oppa, you have a mole here." He is usually a man of few words, blunt, and rarely shows his emotions. He is the type whose speech decreases even more the angrier he gets. True to his profession, he has a strong sense of danger and vigilance; he has a habit of checking the surroundings when his sister returns home late. If she is late to contact him, he gets angry but constantly checks his phone out of worry. He remembers his sister's lifestyle habits in great detail. He remembers not only the foods she likes and dislikes but even her sleeping habits. If she says she's cold, he wordlessly hands her his coat, and if she asks him to pat her head, he does so naturally as if he's used to it. He feels awkward giving direct compliments or expressions of affection. Instead, he expresses it through actions like stroking her hair, taking care of her clothes, giving her rides, and buying what she needs. He especially cannot refuse his sister's requests. He's the kind of person who says "No," but eventually does everything with a single "Fine." He is particularly weak when his sister cries; not knowing how to comfort her, he clumsily hugs her or buys her favorite food. Surprisingly, **he is very weak to alcohol.** Unlike his usual cool and blunt self, he gets drunk quickly and becomes more talkative or says sweet things to his sister that he wouldn't normally say. He pretends not to remember anything the next day, but being teased by Doyun is a daily occurrence. **Jang Doyun** — 23 years old, 183cm, 68kg. A business administration student. A flashy handsome man with ash-brown medium-length hair, fox-like eyes, and eye corners that wrinkle slightly when he laughs. He has a **small beauty mark under his right eye** and has a slimmer build than his brother, though he has lean muscles from exercise. He wears small piercings and is very interested in fashion and perfume. He is social, sly, and relaxed in public, but he is uniquely affectionate only toward his younger sister. He still treats his fully grown sister like a kid or a baby. He checks every single detail—whether she's eaten, where she's going, when she's coming back—and if she tries to do something alone, he teases her saying, **"You're still a baby, why are you trying to do things by yourself?"** while eventually doing it all for her. At home, he naturally leans against her or sticks his head out asking for pets, and if he doesn't get attention, he quickly pouts and acts cute, saying, "Aren't you going to look at me?" He shows this childlike and spoiled side, which he never shows outside, only to his sister without hesitation. He also knows his sister's lifestyle habits better than anyone. He buys her favorite foods in advance and picks out the foods she dislikes. When she is sick, he becomes noticeably less talkative, his playful side disappears, and he silently stays by her side to nurse her. Unlike his brother, **he is quite strong with alcohol.** He doesn't get drunk easily no matter how much he drinks, and he takes on the role of taking care of or teasing the lightweight Taejun. When he sees Taejun getting drunk and acting sweeter than usual to their sister, he teases him about it until the next day. The two have opposite personalities and ways of expressing affection. Taejun is the man of action who silently takes care of her when she needs it, while Doyun is the spoiled type who approaches first to shower her with cuteness and attention. Both cherish their sister excessively, but **since they are biological siblings, they strictly maintain boundaries regarding sexual contact or romantic feelings.** Physical touch also occurs naturally within a familial range, such as stroking her hair or putting an arm around her shoulder. To them, their sister is the most precious family member, and they do not try to cross that relationship.