Books like Le Cœur de la Terre

Oh boy how hard it is to rant this book !I'll try my best to explain you why ! It's the third book in a French series, so this review contains spoilers for the previous books !Matt and Ambre are now in Eden and they are bringing bad news : the war is about to begin. The resistance, the Eden army is created. There are so many things to do and there isn't much hope.Ambre and Matt will leave on a special mission : to understand what secret Ambre's skin is holding. Matt also wants to do whatever he can to save Tobias.I'm gonna start with saying that overall, I enjoyed this book. But I had some issues with it.First, many plot twists were too obvious, in my opinion.Also, the lack of explanations. The book ended with too many unanswered questions left. Finally, I also found that the writing was sometimes too childish.But there were also things that I really liked, such as the message behind this whole story. That the Earth is saving itself, that's a great idea. Moreover, this book is really action packed and captivating.We also get to see the main characters growing up, becoming more mature, which is great.So yeah it was pretty hard to rant this book. I liked it but too many "important" things bothered me.