I don't know why the surprise, Cool even made an entire manga, aparently still ongoing, that is basically about two womans with massive breasts seducing and giving paizuri to a shota, but it's not hentai just borderline h, I'm pretty sure Nhentai have the first volume if anyone is curious, from what I remember most of it is just comedy except for the few times they do something to the shota, but it's nothing explicity as their massive breasts hide his shota dick.
About the rape, from a comment I read it seens Quetzalcoatl really did something like that so I had a look at wikipedia, what says there:
One Aztec story claims that Quetzalcoatl was tricked by Tezcatlipoca into becoming drunk and sleeping with a celibate priestess (in some accounts, his sister Quetzalpetlatl) and then burned himself to death out of remorse. His heart became the morning star (see Tlahuizcalpantecuhtli)