A BDSM Short story: Part 2 (Spanking)

This is Part 2 of the story. It is strongly recommended to start with Part 1 (a BDSM Short Story Part 1) for the full experience and proper context. I wake up restrained and already stretched open, left there for him. When he returns, he punishes me for not obeying fast enough, forcing me to learn to follow every command instantly. He pushes my body further, removing and reinserting the plug, then stretching me more with his fingers and a larger toy. When I struggle to take it, he spanks me and forces it deeper with every strike until my body gives in. By the end, he replaces it with himself, taking me completely and proving that I've learned to submit and accept his control. This is an explicit BDSM short story, including dominance and submission, punishment, restraint, anal play, and spanking. It is for adult readers only.