Final Fantasy XV Reader Insert

You are Y/n Lucis Caelum, Twin sister of Noctis Lucis Caelum, you travel off with your brother and his friends to altissia so that he can marry lady Lunafreya Nox Flueret, Sister to Ravus Nox Flueret, a childhood friend of yours, That is until the empire ruined everything by killing his mother, after that you never saw him again...
In later years you are ready to visit Altissia with your brother so that he can get married.