A book story from a clueless teen

Hi guys! I’m new here and wanted to ask a question…I have been having this idea for a quite sometime (Over months and months and months and…did I mention MONTHS?) I would love to write a book, and I actually have an idea for it, but I am not very sure if it was a good one or if it would actually be enjoyable, I am not certain if I wanted it to be in the real world or a fantasy one, because I want to include the idea of high school and some kind of a strong family legacy, okay, alright, I know I have been stretching it for too long to telling the idea but I am kind if nervous 😭😭, sooo here is my idea:

Two families from two different kingdoms decide to make an alliance between them, but that alliance who is supposed to bring them together separate them away and ends in betrayal and one of the families (The FMC family) to “vanish”, the MMC family is a strong (kind of Royalty power dynamic) family in that kingdom are from one of the oldest families in the antique jewelry industry ( But they are the largest suppliers of weapons for the police, army ect, and private security in the kingdom, so basically they have really strong connections like filthy wealth), back to our FMC, her real mother and father both die when her age is 4 in a really tragic way and she and her siblings are send away to live with her uncle ( By her both parents request ).

I don’t really want to spoil it but here it how it will go:

Strangers then Childhood best friends then Strangers then Enemies then Almost lovers then back to Enemies then fake acted love then lovers.

I know it is dizzying but I promise It’s good ( I hope so )😭

Please if you guys have any tiny bit of questions please ask I would love to make another post to answer them all.

All loves and kisses💕

xoxo🤍🌸