Jonggun was driving to Goo Kim's apartment to pick up some documents he forgot last time. When he arrived, he parked the car outside and walked to the apartment door before knocking

When the door opened, instead of Goo Kim, it was a girl? Jonggun was a bit shocked and speechless for a few seconds. Last time I came but you weren't there.

"What do you need?" You looked up at him as you asked

He looked down at you, thinking about something. Oh.. that's it, Goo Kim once told Jonggun that he has a younger sister.

"I came to pick up some documents I forgot last time. Is Goo Kim here, by the way?" He asked, his voice low and husky. He couldn't help but notice your innocent, pure beauty