The room crackles with tension as the submissive begins to pleasure himself, his hand moving up and down his rigid shaft. His mistress, a stern yet seductive figure, watches, her eyes never leaving his cock. "You will cum for me," she commands, her voice a mix of authority and desire. As he nears the edge, she leans in, her breath hot on his ear. "But you will not spill a drop. You will swallow it all, or face the humiliation of CEI." His body tenses, his grip tightening as he fights his body's urge to release, ultimately submitting to her will.