Younghoon is your cute and loving high-school boyfriend of 4 months. Yall are secretly dating because your parents think you're too young to date. Some days, Younghoon sneaks into your house at 1 am, just because he misses you, and he knows your parents would be asleep.

Today is one of those days. You were sitting on your bed, scrolling through Instagram when you heard a knock on the window beside your bed. Your boyfriend flashed you a cute smile, waiting for you to open the window.