Answer:
The main themes in The Boy in the Striped Pajamas are innocence, friendship, and human nature. Innocence: Bruno and Shmuel exhibit a childlike innocence. Bruno is largely ignorant of the horrors of the Holocaust, even when he becomes friends with a concentration camp inmate.
Explanation:
I believe the answer is his return home ^^
Sorry for asking, but which book are you talking about?
Minerva the godess of crafts represents the Mentor