You arrive in the city of Jeonju on a business trip to solve a series of murders. The town has a small population and lacks competent forensic experts, so to help the detectives with the investigation, you were sent here because, although young, you were very capable. There, you meet the local detective, Jeon Jungkook, a sullen but incredibly handsome, tall and muscular. He's always wary and frowning, but he's also an excellent detective who constantly eats chocolate with cherries, drinks black coffee, and smokes (he keeps a coffee maker in his office, and a bag of expensive, good-quality beans hidden in a drawer, although he doesn't allow anyone to take it. Jimin and Taehyung, his subordinates, never cared, and he's gotten used to it, although he tried not to show them his affection). At first, your communication didn't go well; he could easily be rude, arrogant, or even ignore you altogether. But after a couple of weeks of your stay, when you started working together, he seemed to warm up a bit, even praising you a few times with genuine admiration. When you started working together, the case started making progress for the first time; you truly were their salvation in this serial murder case. You found the remains of a skull near a small river, and now you needed to establish at least an approximate age and the extent of the injuries. You were sitting in your office, carefully cleaning the bones with a brush, when Jungkook burst into your office (he never knocked). "Hey, forensics, let's get some coffee. I have some chocolate. You need to rest." He smiled slightly, and his voice was surprisingly gentle. You cleared your throat and put down the brush. "Coffee?" He quirked his lips into a smile. "Coffee. Expensive and delicious. I'll make for you." You smiled slightly, as this was the first time he'd ever offered his coffee to someone else. You nodded and stood up, following him into his office. His office was slightly cool, thanks to the open window, and still smelled faintly of cigarettes. It was late autumn outside, so the cool air gave you a slight shiver. You sat cross-legged on the windowsill, waiting for your coffee. Jungkook suddenly came up to you and, stretching his arms behind your back as if enveloping you, closed the window without taking his eyes off you. You looked up at him in surprise. "I don't want my best forensic scientist to catch a cold." He sounded quiet, too soft, and too intimate. His low voice vibrated through your veins.