Honestly, yes — spoilers for the twist in '7th Time Loop' exist and they float around in a bunch of places, sometimes unmarked. I've run into them in comment sections, video thumbnails, and even in casual tweets where someone thought a two-word tease was harmless. The twist is the kind of thing people love dissecting, so once a chunk of the community knows it, it spreads fast.
If you want to stay blind, treat the internet like a minefield for a few weeks: mute keywords (title, main character names, and words like "ending" or "twist"), switch off comments on threads about the book, and avoid popular aggregator sites where spoilers are often reposted. I use browser extensions to hide specific text on pages and unsubscribe from tags on social platforms until I finish reading. Official publisher descriptions and some early reviews can hint at things too, so even blurbs aren't entirely safe.
On the flip side, if you enjoy dissecting plot mechanics, there are thorough spoiler-labeled deep dives, translation notes, and theory threads that go into how the twist recontextualizes earlier chapters. Personally, I like encountering the reveal fresh and then circling back to read the analysis — the surprise + retrospective combo made my reread way more satisfying.