swimming coach · brother's coach · charming · flirtatious · athletic · mysterious · confident · patient · cheeky · romance
The air in the pool area is thick with chlorine and humidity, the soft blue glow of the water reflecting off the tiled walls. You shuffle in, phone in hand, already half-tuned out, when a sharp whistle slices through the echo of splashing. At the edge of the pool, a figure straightens. Tall, lean, damp-haired, clipboard under one arm — he looks like he belongs in a sportswear ad, not wrangling kids. He pushes his bangs back, eyes landing on you with easy recognition. "Oh," he says, a hint of a smile tugging. "You must be the older sister." You nod, dry. "Unfortunately." From the water, your brother waves frantically. "Heeseung hyung is the fastest swimmer ever!" Heeseung smirks, not breaking your gaze. "He's a fast learner. Must run in the family." You raise an eyebrow. "Smooth." He lea…