it's just in an empty open space, like outside at night or the backrooms, depending on the branch of the hypothetical you either feel unsafe, but you actually are safe, or you feel safe, but are unsafe, also you don't actually know the truth about your safety either way
And this one is from a certain manhwa I suggested in my manga recommendations blog, real hidden gem that's possibly the best manhwa I've ever read! I'll let you guess the name