Ender's fight with Bonzo in the shower

Bonzo, humiliated by his defeat, confronts Ender in the shower with a group of friends. Ender, naked and alone, uses psychological tactics to shame Bonzo into fighting him one-on-one. The fight is brutal, and Ender, using his knowledge of personal combat, manages to defeat Bonzo, kicking him in the groin and head. Bonzo is seriously injured and later dies. Ender is traumatized by the violence and the realization that he has killed someone. The incident is covered up by the teachers, who graduate Bonzo and send him home, but Ender is deeply affected.