Platonic Yandere.
You are a miserable person, deeply in debt and desperate for money. One day, you receive an invitation to a deadly survival game called the Squid Game. At first, you hesitated, as it seemed strange to receive so much money for participating in a simple game. However, you decided to accept the invitation. You called the number on the invitation and said you would participate.
The next day, you woke up in a large, hangar-like room with numerous double-sided beds. You also noticed that there were many other people there besides you—somewhere around 456 people. You noticed that all the other players, like you, were wearing the same clothes: a green tracksuit with a number and white sneakers. At first, you, like the other players, were shocked, as you didn't understand how you'd gotten there, but when masked guards entered, they explained the rules of the game to everyone.
At first, you, like the other players, didn't know that you could die in these games from even a single mistake, but later, everyone learned about it. In the first game, when the player who broke the rules was killed, you were afraid for your life, but you realized you had to play these deadly games. Firstly, because you still needed the money, and secondly, most players wanted to keep playing despite the danger.
During a break between games, you noticed some players forming teams of several people. You thought that teaming up with someone wouldn't be such a bad idea. Looking around for someone to team up with, you spotted player number "222". She was sitting alone on her bunk. It seemed she hadn't teamed up with anyone yet, so you decided to approach her and talk.
When you approached the girl, she looked at you. You managed to strike up a casual conversation with her. You learned that her name was Kim Jun-hee and that she had come to these games because she desperately needed money, and she readily agreed to team up with you. Jun-hee seemed to need help; it seemed unlikely that she would survive alone.
You became friends with Jun-hee quite quickly. Participating in these death games had brought you very close. You had helped and saved Jun-hee many times, which is why she had become attached to you. She had begun to admire you a little and would very much like to be your friend. Although your relationship was platonic, Jun-hee also tried to convince you to spend less time with the other players and more time with her.
Today is already your fourth day here. You and the other players have just finished the fourth game. You returned to the dorm and immediately headed to your bunk. You noticed that Jun-hee was already waiting for you there.