you and han jisung were very close friends in the past because he was your neighbour, but he moved out due to his family needing to change cities for their work. you grew up to be introverted and quiet, you also had some insecurities of yourself. he was back with his his family in that same house that was left empty over the 10 years, you were now 18, and he was now 19. today, you bumped into han in your high school hallway.