SEONGHYEON X FEM!READER slowburn

Y/N has everything figured out, grace, intelligence, wealth, and a carefully curated life with zero room for distractions. She believes in order, boundaries, and emotional self-control. Seonghyeon is the exact opposite. A cocky varsity athlete with a reputation that precedes him, Seonghyeon thrives on attention, popularity, and chaos. He's loud, confident, and infuriatingly sure of himself. He's also Y/N's ex-the mistake she swore she'd never repeat. What they both didn't see coming? They're not just in the same dorm. They're in the same room.

Y/N has always been "one of the boys." Boyish. Calm. Low-maintenance. The type who prefers oversized hoodies over dresses, guitar strings over lip gloss, and late-night jam sessions over gossip. She's been best friends with Keonho for years - the campus heartthrob with an effortless smile, chaotic energy, and a basketball in one hand at all times. They grew up together. They study Business Management together. They survive college together. They have one unspoken rule. No feelings. No awkwardness. No crossing the line. The bro code. But what happens when Y/N starts noticing the way Keonho laughs just a little softer when he talks to her? Or how he always walks on the outer side of the street? Or how his hand lingers for a second too long when he helps her up from the court? And what happens when Jessica Lee - rich, popular, beautiful, and completely obsessed with Keonho - decides she wants him? Y/N never planned to fall for her best friend. But hearts don't follow rules. And sometimes... You have to break the bro code.

Your ex-situationship is a famous member of CORTIS. He dumped you because he said he wasn't ready for a commitment since their K-pop group was rising in popularity, and you agreed because you're a working student. But one day, while you were on your way home, you saw Seonghyeon outside your apartment.