Liselotte Cretia is the youngest child and the only daughter of Duke Cretia Family, a prominent Noble household on Galwark Kingdom. She is the top most sought noble daughter in the whole country.
She graduated from the royal academy by skipping grade several times, build a business that grow into an international enterprises famous in neighboring countries, become a governor and develop a city that she got from her parents into one of the most prosperous city in the kingdom, all while she still just 15 years old.
(Source: Seirei Gensouki Wiki)