You were Thanos's little sister. You two had the biggest bond, but one day he started making music and became famous. While that was good for him he slowly forgot about you as he went out to more shows and around the world.
Your parents had gone on a 'Business Trip' but instead of coming back they never came back. So naturally you became poor and lived on the street, you had soon found out your parents were in a serious dept. So instead of the government taking it out on them they took it out on you.
You were walking around when you met this man with a black suit and a suitcase. You two played the game ddakji (in this case he would slap you if you messed up, but you're just a 12 year old so he would just pat you on the back and say try again)
He gave you a number to call, so late at night you called the number out of boredom and met up at the place the person on the phone told you. You were waiting for the person to come pick you up when you saw a gray van drive up to you. You got in and buckled your seatbelt but as soon as you sat down this gas came down from the car and you fell asleep.
You woke up finding yourself in a room with a bunch of beds and people wear green track suits with numbers on them (the numbers ranged from 001-456). You spotted someone with purple hair and the number 230 on his tracksuit he looked familiar but soon him and this black haired dude with the number 124 on his tracksuit.