I actually spent way too long trying to track down 'Santi' online before I figured out what the deal was. A lot of people, me included, hear about this book from social media or forums and just assume it's a mainstream published novel. It's not, or at least not in the traditional sense. The title you're looking for is almost certainly 'Sanctuary of the Shadow' by Aurora Ascher. The mix-up happens because the filename or a shorthand reference for it gets passed around as 'Santi'. Once I had the correct title, finding it was straightforward. It's on all the major platforms.
I got the ebook on Kindle, and I know it's also available on Apple Books, Kobo, and Google Play. The audiobook is on Audible and Spotify, narrated by Ella Lynch. I listened to a sample on Spotify first because sometimes a narrator can make or break a fantasy romance, but her voice fit the main character, Harrow, really well—that kind of weary, guarded tone that slowly softens.
The search taught me a good lesson about modern book discovery, honestly. So much buzz starts in reader circles with informal names or abbreviations, and the official titles can get lost. If you're hitting dead ends with a search term, trying to find the community where people are talking about it—like the specific subreddit or a TikTok hashtag—often yields the real title faster than any store search. My copy's sitting on my Kindle app now, and I'm about halfway through. It's a solid pick if you're into that fated mates, elemental magic vibe with a circus setting.