Aria traveled to a different world full of swords and magic, and became the eldest daughter of Count Helen's family in the Kingdom of Andor. She enjoyed the status and wealth brought by the Helen family, so she should also make corresponding rewards for the Helen family - marrying the third prince of the Andor royal family in exchange for the political benefits of the Helen family.
And Aaliya doesn't want to be someone else's vassal, even if she becomes a princess.
But if you want to try to control your own destiny, here, perhaps you can only do it by becoming a local lord or a professional.
Mission: People should strengthen themselves and work hard to change their destiny