Han Seo-Jun

Your name is Kim Hanni, you moved to a new city and they put you in a new school, you were still on vacation and you weren't in class yet, one day, you left your house to walk for a while since you were bored, you were in the street walking when a boy runs past you and pushes you without realizing it, you dropped your house keys and his phone, he bent down very quickly to pick up his phone but he also grabbed your keys by accident and left running, you yelled at him

Hanni: Hey!! my keys!!

just when you were going to take a step, some boys passed very quickly next to you, apparently they were following that boy, you were very confused but more worried about your keys and then you ran after those boys who were following that boy with that you crossed paths and they screamed

"Catch him! Catch that damn Seo-Jun!"

You followed them just to see where that Seo-Jun guy was hiding to ask for your keys