Unattainable (Solangelo AU)
As royalty, Will Solace had his life planned out the day he was born. His parents control everything he does, including who he had to marry.
They've picked a girl named Bianca Di Angelo, who is a princess from Italy. Since they've never met each other, their parents arrange for Bianca to stay at the castle for a while.
She brings her bother Nico along with her, to keep her company. Will takes one look at the couple and falls in love... With Nico.
This is a mortal AU, which means they don't have powers. They're not demigods. Also, it's set in the past, so it won't be modern.
The characters belong to Rick Riordan, but he setting and idea is mine.