A real pleasure to read this book for end CM1 children and / or CM2, but mainly just for personal pleasure (like me). The writing is very interesting and catchy to the end. The idea is rich and the pleasure it brings is equally important. The personality of this Yann is overwhelming. The influence he has on his brothers is poignant reality. A vision of society today with main themes: insecurity, solidarity, mutual aid, abandonment, external look and especially the omnipresent force of character in this novel that did not let me insensitive . What can I say, except that I highly recommend this remarkable book which reads very easily and almost at once. Happy reading, and have fun .. great trip!