The Jasad Heir is a solid debut novel and first installment of a series. Though it has a slow start with too much info dumping, once the story gets going and the characters are firmly introduced, the book is engaging. 

The protagonist, Sylvia, is a morally grey heroine with a tragic past filled with loss and abuse. Having lost her family and status as a princess during a war, she lives as a commoner, hiding her identity as well as her restrained magic. I really loved the complexity of Sylvia's character and following her through each difficult choice and harsh revelation from her past. She felt very real. 

While I'm not usually a fan of enemies to lovers romances, the dynamic between Sylvia and Arin is the best example I've seen of the trope. They are natural enemies as he is the son of the man who overthrew her family and the way their relationship progresses is authentic.

I'm really looking forward to the next installment of this series.