Why Choose / Reverse Harem (Dark)King of Cruelty: Saint and Sinners, Book 7
Ruby VincentSpiceDarkness
How we rate spice & darkness
- 📖Kindle, paperback & audiobook on Amazon
- 🔥Spice & darkness rated — content warnings listed below
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Why we recommend it
The seventh Saint and Sinners entry crowns a king of cruelty, promising a brutal antihero and a love built on danger and dominance. The tone is dark and ruthless, made for readers who crave villainous men, simmering enmity, and the thrill of being claimed by someone merciless. Expect high stakes, possessive intensity, and morally grey edges. A gripping read for fans of mafia-adjacent dark romance and heroes who rule without apology.
At a glance
King of Cruelty is a why-choose romance by Ruby Vincent. It rates 4/5 for spice and 5/5 for darkness, one of the darker reads in why-choose romance: of the 308 why-choose romance books we rate, 87% score lower for darkness and 3% lower for spice. Tropes: antihero / villain MC, revenge and enemies to lovers. It is darker than Ruby Vincent’s other books on Readark (average darkness 4.0/5). 3 content warnings are listed below, hidden until you tap.
Book details
- Published
- October 2025
King of Cruelty spice level
King of Cruelty is rated 4/5 for spice on Readark’s scale: explicit and frequent, meaning multiple detailed scenes, with heat central to the story. Its darkness rating is 5/5: extreme, meaning taboo-adjacent themes taken to the edge of the genre. How we rate
King of Cruelty content warnings
We list 3 content warnings for this book. They stay hidden until you tap, so you can check without spoilers.
Content warnings (tap to reveal)
- Emotional Abuse / Gaslighting
- Graphic Violence
- Torture
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