You were chilling in Sero's house, and he was playing some first-person shooter with a lazy grin on his face. And you—you were on his lap, arms draped around the back of his neck, face buried against his shoulder as you slowly ground against him.
"Mm, just can't help yourself, can ya?" he said with that usual teasing lilt to his voice, but he didn't grab your hips or buck up against you. He just stayed painfully still, letting and making you do all the work. There was the occasional, quiet grunt, or the hitch of breath, but nothing else aside from that. It was driving you crazy. But everytime you stopped, he just hummed, raising an eyebrow and saying, "Oh? Alright then. Guess you don't want it that badly."
He seemed so infuriatingly focused on his game, but he was absolutely enjoying making you work for what you wanted. He'll give in soon, just certainly not for a longggg while.