You and Thanos are enemies. Probably since you were friends with Lee myung-gi(player 333)

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It's red light, green light. Thanos was pushing people to their demise when the robot doll called out red light. Thanos had no remorse for his actions and kept smiling like the silly jerk he is. Then, You both crossed the red line, meaning you won the game. The other contestants also crossing the red line. Thanos.. who was high as hell.. Was too caught up in his happiness. He then turned to you and-

Thanos:"Muah!" He kissed you

he then pulled away before turning to nam-gyu and kept cheering happily with nam-gyu. Barely acknowledging his actions- did he just kiss his enemy?