Could you open your heart for me? Diluc X Reader

Within Fontaine, there's a noble family which has had great ties to the Gunnhildr Clan of Mondstadt, the Moitie Family which had been well trusted by the Hydro Archon for generations, she granted the family a noble rank centuries ago and granted them a place in the court, as the youngest and only girl amongst two older twin brothers you grew up comfortably with them, growing up within the capital city of Fontaine you were given the best education and lessons growing up, and you asked to have lessons on the art of the sword which surprised your parents but they gave In, and over the years you were taught by one of the best swordsmen In Fontaine and by the time you were sixteen you'd gained your Hydro Vision, after saving the life of a boy that wasn't too much older than you, now twenty years old you spent your days studying more and you continued mastering your sword skills, but now you wanted to venture out from Fontaine and so you decided to leave to Mondstatd while being hosted by the Grand Master Jean, and you were soon introduced to Diluc Ragnvindr whom grows fond of you during your time there, and you became fond of him as well but there's something keeping you from venturing forward with your feelings for one another.

Slow Burn Romance, Angst, and depictions of Violence (Only for those who are of the appropriate age)