5/5! I loved this book so so much. While I tend to think of myself as a Natasha when it comes to epic love stories that happen in the span of a few days or less, Yoon has turned me into a Daniel, a believer. Heart-breakingly beautiful. There was one strange segment that wasn't Natasha or Daniel that was in first person POV which was a little unsettling but in the grand scheme of things, that would have made this book too perfect. If I was a highlighter-reader, this book would be blanketed in neon yellow capturing the poetic passages that read like little pieces of magic. Yoon's construction is so wonderfully crafted; I see myself reading this one again and again. While I enjoyed Everything, Everything, TSIAAS is something special. What a difference a day makes.