Ashe is Vayne's diplomatic/political hostage, she's being defiant stubborn and haughty. He decides it's about time to give her some discipline and a private lesson in propriety. Much to Ashe's chagrin she's enjoying every second of it, while Vayne is pleased to see his captive break and submit to his will. Bonus points for light bondage, spanking, rough sex, begging, orgasm denial or forced orgasms and humiliation.
Final Fantasy XII, Ashe/Vayne, Domination/submission