Be my princess and Love Letter from Thief X cross over~ (CANCELLED)

Note : This is my first book,so it might be bad so read with CAUTION!(and this is close to some other fan fictions i read)

This is a girl where her parents abandoned her but her grandfather ( I know its great grandfather or something) took her in.Little that she knew that her grandfather was Da Vinci. (...sorry guys but i forgot what is the artist name of her grandfather) After a few weeks, her grandfather died in an accident after he gave a note to his best friends.The girl then was adopted by Noble Michel. ( yea I don't know my history)After this girl is 18 something magical happens... Read to find out!

sorry if the summary is bad, again this is my first book.