I watched it last night and seen that too. I don't understand why they had to put that in the show. I'm sure they'll tie it together later since it was Nero's entourage but still, I think they could have done without that. Probably could have left out Otto getting raped too, little weird IMHO.
The whole rape scene would have been far better implied instead of depicted. I found it to be a bit too long in duration and more disgusting than frightening.