Champion deserves 5 stars if not more (At the moment I'd give it 100+ stars) 
 No words will do justice to this book. It is pure beauty. 
 I took me almost 10 days to finish Champion, not because it wasn't good but because it was so good I didn't want it to end. *grabs the book and starts crying* 
 Champion is an amazing and heartbreaking mix of thrilling action, adrenaline and love. The romance although bittersweet it was oh-so-swoon-worth. 
 Each chapter was a stab in my poor heart---oh-my-god...the feels, the feels!! This book broke my heart (in a good way, of course!). 
 There were times when I couldn't even breathe, so much I was overwhelmed. ( Mind you, this isn't something it usually happens, in fact I can recall and count all the times it did happen before, 4 times in all: 3 times while watching a movie and one while reading the end of the Harry Potter series). 
 June & Day have definitely won my heart, utterly and completely. 
 There is no word in this book I'd change; ending included. 
 Although bittersweet the ending was the most right for the series, no other ending would have been so perfect for this terrific series. It is only fitting that the ending is just, in fact, only the beginning. 
 I just wish Marie Lu would have graced us with some small chapter or even better a short story set a few years after the epilogue. But well, this is wishful thinking. 
 I'll close this review from a quote from Marie Lu herself: 
 "My life became the lives of Day and June, and through them I saw my own fears, hopes and aspirations play out across their canvas. Now I've reached the point where our stories diverge. They are off to live beyond the confines of the trilogy; I am left waving to them from the sidelines. I don't know where they'll go but I think they're going to be okay."