>>936564885To answer your first question, yes. It is very well documented in the Talmud that childrape is part of their culture. However, they keep the Talmud out of non-jewish hands by pricing it at $2000-$3000 for a full set. The Talmud also has rules for not talking about what is in the Talmud.
Now, as for why childrape is customary in their culture, age 12 is considered marrying age for girls. They are considered adults by that point. And if the girl is a captured virgin, then she can not say "NO" to marriage. And once she is married, a wife, slave or not, can not say "NO" to sex. It is her duty as a wife. Therefore, it is not childrape to the jews.