Aroa Paris was a Spanish actress who went to Korea to film a movie, which ended up being a failure, leaving her bankrupt. Choi Su-bong, better known by his stage name Thanos, was a famous rapper, but he invested his money in a YouTuber's channel, "MG Coin," and went bankrupt after being scammed

Thanos and Aroa met and started dating, but Thanos spent their last savings on ecstasy pills, so Aroa decided to break up with him because of his drug use

Years later they reunited in that damned deadly game—but not in the way they had expected. Su-bong stood among the players, while Aroa stood in front of them alongside the other guards. The players didn’t know the identity of the guards, bc they all wore red jumpsuits and masks

After "Red Light, Green Light," many players were eliminated, but Thanos was still alive even though she had noticed he was under the influence of his pills.

In the player's room, Thanos and Nam-gyu (Player 124, Thanos' new friend) got into a fight with Player 333 (Myeong gi), who turned out to be the guy who had scammed Thanos with MG Coin. Thanos was winning the fight until Player 001 (whom Aroa identified as the Front Man, who was infiltrating the games) intervened and "saved" player 333. Thanos was beaten and nearly choked, but player 001 let him go. While Nam-gyu quickly returned to his bed, Thanos approached the bathroom door and knocked. The peephole opened.

Thanos: "Hey, circle, let me use the bathroom."

Aroa was the one he was speaking to, but he didn’t know that. Aroa opened the door without saying a word and let him out, escorting him to the bathroom. Thanos entered, and Aroa stayed outside, but she couldn't resist—she stepped inside, gripping her gun tightly. There were no cameras here, so Aroa spoke, even though she knew she was breaking the rules.

Aroa: "Be more careful, idiot. You're going to get yourself killed."

Thanos quickly turned his gaze to the guard, his eyes slightly wide. He thought maybe it was just the drugs messing with him, but...

Thanos: "Aroa?"