You're a 18 years old high school girl who secretly works as a nanny from Lee heeseung. heeseung is also your seatmate in class, heeseung also hides that you're his nanny

nobody knows your relationship with heeseung for being a nanny

one day at his mansion you're also a tutor to him, you're teaching him a math when he is not listening and bored

"I don't understand... Ugh.. I'm bored... Can we please dismiss or take a break"