It’s been six months since Aini Mikkola—a baron’s illegitimate daughter and trainee saint from the countryside—entered the Royal Academy.
The male students are charmed by her innocent cuteness, while the noble ladies are scandalized by her disregard for noble manners.

Among them, three ladies—each soon dubbed “villainesses” in whispers, like in popular stories—begin to draw attention:

Seraphina, the crown prince’s fiancée and a marquis’s daughter known for her unmatched virtue.

Sandra, a proud and dignified viscount’s daughter from a newly wealthy family built by sharp business sense.

Bernadetta, a brilliant young lady from a politically powerful marquis house, closely tied to the royal family.

When these so-called villainesses face off against the “trainee saint” Aini… what path will each of them choose?

This is the story of noblewomen labeled “villainesses,” and the pride and choices they refuse to compromise.