Sub Drop
The emotional and physical crash a submissive can experience after an intense scene or dynamic high, showing up hours or even days later as sadness, exhaustion, anxiety, or a hollow feeling. In romance fiction it is often the moment a dominant's attentiveness is tested, and the comfort that follows becomes the emotional payoff of the scene.
Readers love the vulnerability it exposes: a sub who was powerful and desired in the scene becomes raw and needy afterward, and the dominant's tenderness in that window is where the real devotion lives. It turns aftercare from a checkbox into proof of love, and the hurt/comfort beat lands harder because the drop is a genuine consequence rather than an injury.