As written in the title this is a Ramsay Bolton Fanfiction. Even if this should be self-explanatory there will be chapters about violence, blood and torture. Considering what kind of a person Ramsay Bolton is the sex scenes will also include violence. Let me say a big amount of it.
This will be the only warning you are going to receive. So be careful if you are not comfortable with this topic.
Don't tell me you haven't been warned.