My Sweet Boss

After more than ten years together, Seojin’s boyfriend walks out without warning, only to announce he’s engaged to her boss’s daughter. When her life feels completely dried out, a man appears and pulls her into a one-week summer romance she assumes will fade like a dream. But the real shock comes later: that same man is introduced as a CEO at her new job. A thrilling adult office romance between guarded secretary Hyeon Seojin and her bold, relentlessly straightforward new boss, Chae Juwan.

(Source: Lezhin US)

Note: Includes one extra chapter.