My Demon Fiance - Creatures of the Night, #1

I have less than a week to gather the money for my mom's surgery. Her life hangs by a thread, and obtaining her necessary medication feels like a quest for treasure in a well-guarded fortress. Between juggling three jobs and attending school, there's no feasible way for me to afford her medicine. I'm mentally preparing for the worst, fearing that my mom's life might slip away. That's when my grumpy neighbor, Vincent, comes out of nowhere with the wildest idea.
He proposes that we fake an engagement to access his insurance benefits, which are beyond my wildest dreams. With my mom's impending surgery, I'm desperate for any help I can get, but I can't help thinking, "Seriously?" Vincent is the kind of guy who perpetually wears a scowl, making him the type to frighten kittens just by frowning. I reluctantly agree, driven by the need to save my mom, even if it means getting entangled with Vincent.
However, here's the unexpected twist: Vincent isn't as awful as he appears. There's a hidden depth to the meaning behind his scowl. One night, our dynamic takes an unexpected turn, and I find myself struggling to resist him. Is Vincent really as terrible as he seems, or could there be more to him than meets the eye? Warning: this is an MM demon romance novel with mature themes, please be advised.