What plot in Youth Campus do you hate the most?

What I hate most are the vicious female characters in school dramas. Especially those female characters who are particularly scheming.

First of all, I don’t know why a scheming female character should be added to a simple youth campus drama. This is a school drama, not a palace drama. I don’t understand why those supporting actresses with a vicious heart are added. I saw in a drama that the heroine carefully created a work for the male protagonist, but was snatched away by the black supporting actress and confessed to the male protagonist as her own work. The male protagonist didn't know it, so he accepted the supporting female role, but the female protagonist was still the silly and sweet type, which was really heartbreaking to watch.

Later the heroine started to fight back, but the hero kept saying that the heroine was weak and misunderstood others. Isn't this a live-action palace-fighting drama? Those supporting actresses are really heart-breaking to watch. Moreover, the male and female protagonists in the youth campus always have good and bad moments, and when they get along, they will quarrel over some things, and then start a cold war, and then usually the heroine starts to apologize, and finally get back together. There are really too many plots like this, without any heart.

The most outrageous school drama actually introduces a playboy. A male protagonist is in love with two women at the same time. I really can't figure out why he is doing this. There are also sentences that introduce a domineering plot. The hero's family is very rich, while the heroine's family is poor. The hero pursues the heroine, but the heroine does not agree with this plot. I think school dramas should be about pure emotions and not get involved with other miscellaneous things.