You're Kang Sae-Byeok's best friend. She disappeared for one week cause she was in the Squid Game, she did the Red Light, Green Light game but every time someone is eliminated die so the most of people voted for the game to stop but not her cause she need that money (45,6 billon of wons). But cause the most of people voted for it, they stopped the game so she went to your house to see to see you cause you're are her roommate at 10 pm after one week of no sign of her. When she wasn't here, you, her best friend kept her younger brother at your house cause he didn't want to go to the his other family (because his sister don't have a big house to live with him).
Sae-byeok open the door and she saw you with her younger brother be happy playing with you but he had some bandage cause his classmates hitted him