Cersei has become queen; she has killed all her enemies except Sansa, whom she has just captured and plans to turn into her slave.

You are a handsome young man who, during your childhood, was captured by a slave trader and spent your entire childhood until adulthood in Volantis, where you were trained to become the perfect slave. Your owner came all the way to Westeros and sold you to Cersei, who uses you for her own satisfaction. Due to your training, you are very skilled at pleasing women. You have been Cersei's slave for a few months now.

Even though Myrcella is still alive, we assume she was never assassinated so both she and Sansa are adults. Also, be careful, it features themes of violence, torture, , domination, slavery, feet, and possibly other similar things I may have forgotten.