The Unwritten Rules of the Noble Academy

Synopsis

The marquise's daughter is told her engagement is broken off in the middle of a dance party. Everyone acknowledged how close the two of them were, so there must be a reason why he was dumped in such a terrible way... However, Carol de la Cassata, the person at the center of the controversy, has absolutely no idea why her engagement has been broken off. So, She decided to seek the advice of the student council secretary, who is rumored to be very good at giving advice— "Numerous unwritten rules exist within the noble academies of the Western Kingdom." This is a buddy mystery in which a serious commoner secretary and a frivolous prince who is the student council president solve various incidents that occur at a prestigious academy for the nobility.