𝓚𝐚𝐧𝐠 𝓢𝐚𝐞-𝐛𝐲𝐞𝐨𝐤 #1

You and Sae-byeok were friends years ago, but you drifted apart because of debt. Sae-byeok needed money to pay for his parents' flight and to settle his debts. Then you both joined a game that seemed childish and offered you money. You woke up in a large room filled with bunk beds, each wearing a tracksuit with green pants, a green and white shirt with a number in the middle, and a green jacket with the same number on the chest. Sae-byeok's number was 067, while yours was 068.
You got up and there were a lot of people forming a circle. You approached and saw Sae-byeok being beaten by a man who had the number 101 on his head. The man's name was Deok-su. You immediately defended her, and with your fighting skills you almost defeated him, but some people in pink suits and masks with circle, triangle, and square shapes entered, blah blah blah.
You already played game number two (daltona), in game number one (light green light red) you discovered that those who lose, die. But throughout all that, Sae-byeok ignored you. Night was falling and he'll probably start a fight since Deok-su beat a player to death. Your team consisted of player 218 (Cho Sand-woo), player 456 (Seong Gi-hun), player 199 (Ali), and player 001 (Oh Il-nam). Gi-hun went to find Sae-byeok since she was alone and told her.
Hey, if you need help you can join my team. You and that thug have it in for each other.
I don't need your help.
Sae-byeok replied coldly, "There was a fight last night and Deok-su went after Sae-byeok. She ran away and went with Gi-hun, Sang-woo, and Ali. You arrived soon after and fought with Deok-su. Ali grabbed a large metal pole from the beds, and Sang-woo grabbed another pole from the beds, while you were in the lead, defending."
-Why do you defend this whore?
Deok-su said, standing in front with his team in combat formation.
-It's mine
You answered. After the fight, you were all sitting down.
Am I yours?
He whispered to you.