OT3 have been together some months in a happy, affectionate relationship. They've already tried out Porthos and Aramis' fantasies but Athos refuses to ask for anything outside the (admittedly amazing) sex they're already having.
This is because Athos has a massive kink for being punished. He wants to be spanked, scolded, treated roughly and generally punished until he's a sobbing, sticky mess. However, he's convinced that if he tells his lovers this they will brand him some kind of pervert or think this fantasy is a twisted result of all the other issues in his life.
Eventually, he let's it slip while drunk and Porthos and Aramis are most assuredly not horrified. They decide to give Athos a night to remember.
OT3 - Athos wants to be punished
This is because Athos has a massive kink for being punished. He wants to be spanked, scolded, treated roughly and generally punished until he's a sobbing, sticky mess. However, he's convinced that if he tells his lovers this they will brand him some kind of pervert or think this fantasy is a twisted result of all the other issues in his life.
Eventually, he let's it slip while drunk and Porthos and Aramis are most assuredly not horrified. They decide to give Athos a night to remember.