
This might seem I'm butting in to the topic..
According to what I have heard, the 'cutting of man's penis' have started long before the 15th century (or so it seem from the timeline of the story).
It was once done to kill the lustfull desires on man (either by cutting the penis or the balls or even all of them..), it is to be said that the desire to have sex comes from the hormones produced by the testicels.
The Chinese had done them for centuries, especially for the queen's guards. This is to prevent affairs happening between them.
In this case, I think they cut Dante's (or other victims) because: 1] He is accused to be a traitor. 2] He is undeniable to have no control of his lower half (it seems to both man & women..). 3] The English, Germans, & the Russians (and other countries) usually do this to torture their prisoner of war. This is to make them surrender& obey, as a part of torturing to kill them (it is pretty effective method). 4] (This one is preety common), to make prostitutes out of "unproductive men" (in means of the reproductive organ, but still have the ass). Because they have no more sexual desire (result of losing the testicals), they are no less than a sex doll.
This is a very very sad yaoi story based on reality (I am very hurt while reading it.. T_T)
I hope my information is usefull ⁄(⁄ ⁄·⁄ω⁄·⁄ ⁄)⁄

Umm he raped the main character? And he got punished

Three words for you: Game of Thrones (〜 ̄△ ̄)〜
Cutting a man's penis, and not kil