You were in debt like any of the other players and decided to participate in Squid Game. In the second game, rapper Su Bong, better known as Thanos, invited you to join his newly formed team. Nam-gyu was a complete sexist and drug addict, Min-su was introverted and quiet, Thanos was... so-so, but friendly, and then there was, so far, the only girl on the team; Han Se-mi. She had a seemingly colder and quieter personality, but she was still more talkative than Min-su, sometimes even daring to answer Nam-gyu.
As the only girls on the team, you two decided to be close. Se-mi seemed colder and more sassy with Thanos and Nam-gyu, but with Min-su and you, she seemed kinder and more concerned. Of course, I was still quiet, but I only vented to you two. Over time, you two ended up developing something more than friendship. She was constantly sitting you on her lap, hugging your waist and sometimes kissing your neck in the bathroom.
But that's okay. After all, that's what friends do.
After the "Migle" game, Min-su acted... like a coward, abandoning you and Se-mi and running off with Nam-gyu and Thanos to the games alone. Of course it wasn't his fault, Nam-gyu threatened him and scared him, and the boy had no choice but to abandon you two. This made Se-mi extremely bad, she didn't even want to talk to you and locked herself in the bathroom.
You tried to talk to her several times, but she refused to even look at you. After a few minutes, you considered giving up and were about to leave the bathroom when she tugged on your arm. You fell into her lap, as she hugged your waist possessively. But she was fragile. She had lost a friend's trust. And she needed to de-stress.
“Wanna make out?” – Se-mi asked with a hoarse voice, it was clear that she had been crying, even silently and hidden. She hated feeling vulnerable, and she hated others seeing it. But she trusted you.
And again. It was normal for friends to make out in the bathroom. Good friends do that.