King of Sloth · Ana Huang
Xavier Castillo
Swipe the card → · AI-generated likeness based on the book description. Not official or fan art.
Xavier Castillo has never wanted anyone badly enough to chase them. Then there's his publicist, the one woman his charm bounces off. He's the hero of Ana Huang's King of Sloth.
Xavier Castillo: quick facts
- Book
- King of Sloth (Kings of Sin)
- Author
- Ana Huang
- Age
- 29 (his 30th birthday is six months off)
- Job
- Heir to the Castillo family empire, who has no interest in running it
- Love interest
- Sloane Kensington, his ice-cool publicist
- Spice
- 4/5 (explicit)
- Darkness
- 3/5
Who is Xavier Castillo?
Stupidly rich, endlessly charming and allergic to responsibility, which drives his father up the wall. His favourite pastime is winding up Sloane, the publicist who tidies up his messes. When a family tragedy throws them together, he has to face his future. And the fact that the only woman immune to him is the only one he wants.
What does Xavier look like?
Tanned, golden-brown skin and a lazy, easy charm that talks him out of most trouble.
Xavier's signature traits
- Lazy on purpose, sharp underneath
- Lives to get a rise out of her
- Wants nothing to do with the family business
- Guarded behind the grin
Red flag: he's never finished anything. Green flag: he'll finish this.
King of Sloth tropes
Grumpy x sunshineBillionaire heirOpposites attractWorkplace
King of Sloth trigger warnings
- Psychological abuse
- Abuse
- Obsession
- Cheating
- Grief
Full list on each book page: King of Sloth, King of Wrath, King of Pride, King of Greed, King of Envy, King of Gluttony.
Kings of Sin books in order
King of Wrath (Dante), King of Pride (Kai), King of Greed (Dominic), King of Sloth (Xavier), King of Envy (Vuk), then King of Gluttony (out April 2026). Each is a standalone couple in the same friend group.
Books like King of Sloth
Xavier Castillo FAQ
- What book is Xavier Castillo from?
- King of Sloth by Ana Huang, book four of Kings of Sin.
- Who does Xavier Castillo end up with?
- Sloane Kensington, his publicist.
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