The development of Hyun-Ju's attractions to Gyeong-Seok. From superficial sexual attraction to the love she'd always wanted but was too afraid to find.

Cho Hyun Ju is beautiful. She doesn't know. But there's one person who would prove it.

Gyeongseok has one non-negotiable rule: no more love. Since the sudden, painful loss of his wife, the once-charming man has transformed into a stoic, fiercely protective single father, dedicating every fiber of his being to raising his young daughter. He made a promise-a solemn vow to himself and his child-that he would never risk that kind of heartache again. His life is an orderly, predictable loop of work, school runs, and bedtime stories, precisely the kind of safe, enclosed world he needs to keep his family secure. However, Gyeongseok's perfectly constructed wall begins to crumble the day he meets Hyunju. She is the new owner of the martial arts studio across the street-a woman radiating an unnerving mix of powerful discipline and gentle warmth. Beneath her serene exterior lies a lifetime of rigorous training: Hyunju is a highly skilled ex-Special Forces operative who is now building a new life after transitioning. She carries herself with an uncompromising authenticity, a trait that both fascinates and frustrates the emotionally guarded Gyeongseok. Drawn together by their children and unexpected proximity, they find themselves in a slow, awkward dance. Gyeongseok sees the protective instincts and unwavering moral compass forged in Hyunju's military past, qualities he desperately admires. Hyunju, in turn, sees beyond Gyeongseok's grief-fueled façade to the loving, passionate man buried underneath.