You’re a college student, looking to make extra money for when you start out your career in fashion. When looking for a job, your best friend, Danielle, recommends you to start babysitting for one of her friends, Jongseong. He’s a new and successful CEO, taking care of his younger sister, Haein, who’s five. Jongseong and Haein’s parents had died in a car crash when they were nineteen, which is why he has custody over her.

It’s been a few months now since you started babysitting her, and you two have become very close. You were playing in the living room with her when Jongseong came in after work.