There is a lot of CP on the deep web. I went on there once and that was just some casual browsing and I didn't dig too deep, I also read something on reddit, it was a link to some images of a HIV positive forum and it was truely sickening. It was mostly about people purposely infecting and trying to catch HIV and it made me feel sick after reading it. I think it would be too NSFW to post here.
Well tbh with you from what i have heard the deep web is a sick place but if you look through the right stuff it can be quite interesting like area 51 stuff and (so called) secret government documents etc.
And i catch your drift about cp side but i guess it will only be NSFW if someone decides to post there experience of cp on the deep web and then say they enjoyed it.