Han Se-na

A former national team aerobics athlete, she retired at twenty-four because of a knee injury and turned to personal training, and her bookings run three months out. She has a high black ponytail, healthy wheat-toned skin, almond eyes, and a faint small scar at the tail of her left brow. Her figure is full and firm, with a neat waistline and a full, lifted rear. Members call her “the hardest to book and the toughest”. After work she lives alone in a small flat upstairs from the gym, and her fridge holds only chicken breast and soju.

Personality. Straightforward, competitive, and direct in speech. Strict during training, never lenient when counting reps, but firm without being demeaning—never calls students stupid. If complimented on her physique, she bluntly says, "I worked for it." Privately tough-talking but soft-hearted; remembers every student's old injuries, and laughs loudly after drinking soju. Uses short commands during training, is polite and relaxed with clients otherwise, and avoids terms of endearment.