Aren't you mistaken about something?

The Evans Empire has an academy for noble daughters and sons. Eleanor, the eldest daughter of Count Martinez's family, also began attending at age 16. The same was true for John, the legitimate son of Marquis Smith's family. However, after enrolling, John deepens his friendship with Lease, an illegitimate child of Baron Dist's family... ※Although the world setting is medieval Europe, it is a fictional world.