Responses
I think it would be really interesting if it was the other girl best friend setting it all up for some reason and you find out she's pyscho yandere lesbian or something. But i think more likely it is going to be a random red haired upper classman or maybe a young teacher/teachers assistant. Someone who will seem totally unrelated so she will be tricked at first but catch on somehow then screw him over.
so based off my extensive knowledge of manhua cliches this is my prediction and only a prediction ive not read any spoilers-Glasses guy will be the snake who ends up as the ML. They met once at a party when they were younger and he liked watching her cry so he became intrigued and joined the game for funsies hoping to see her cry again. Through the course of the game he will fall in love with her scheming nature and end up forfeiting at the end.
The child hood friend is also a member and joined to protect her but she wont trust him again after that but he will forfeit and probably date the other best friend who has secretly loved him all along.
Blonde boy will eventually fall head over heels for her and feel dirty about the game telling her about it and what the prizes and circumstances are and then she will then crush him through blackmail and he will have his heart broken. these are my predictions.