The Crown Princess Is Done with This [Both Reborn]

Can Everyone Help Me Find a Book? 🙌🙌

It's a quick transmigration novel. In the first world, the heroine is a class monitor who only cares about studying, and the hero is a study committee member whose grades aren't very good. The setting is an instance, and many chapter titles are like "The Xth Day Players Are Forced to Take an Exam." Thanks!