Content: Safe words, belting, sadistic whumper, implied sexual undertones (but nothing sexual actually happens), restraints.
A whumpee who takes whatever Whumper gives to them, no matter how painful, because of their "safe word". They've never used it - they refuse to because they're afraid that they'll disappoint Whumper, until one day they just can't take anymore.
But Whumper doesn't stop, like they promised. No, they just smile and continue letting their belt come down on Whumpee's back with increased force, head slightly tilted in a condescending manner.
"You didn't really think that would work, did you?" they pout. "I gave you the illusion of a way out so you'd be more open to my ideas, but darling..." They pause, reaching out to grab Whumpee by the hair before yanking their head up. The chains make a loud sound as they strain against the bedposts, and Whumpee finds themself sobbing. "You never had a choice."