The book upsets by giving children the desires and extremely violent and negative emotions: desire and power, pleasure of destroying. Embarrassment s growing as the story that adults absolutely not realize the fight that is played or the dangers that it represents. It's a question of feeling and fights for adults transposed on young boys. The imaginary, the immaturity and ultimately the amorality of Thomas fall within the personality of a child. Similarly the reactions and thoughts of Charles, equally intense and complex, correspond to her age. C is a painful and destructive game.
Terrifying.