It's something about brain chemistry, Jade decides, when he feels Shinjirou trying to swallow down even more laughter. Sex triggers the release of various hormones, after all, and he had forced Shinjirou into a rather intense scene with no warning whatsoever. Of course, he'll look into it, but that can come later. Right now he's more concerned with correcting Shinjirou.

"That's all true." He is stern, unforgiving, even though he knows Shinjirou must be emotionally exhausted. All the better to discipline him now, when he's at his most malleable. "But that's not your most grievous mistake."

He doesn't think Shinjirou would be able to guess correctly, so he spares him the humiliation of trying and failing. "You lied at the beginning, didn't you? You tried to pretend you were something you weren't. But you failed to carry that deception through to the end." He runs his hand along Shinjirou's belly, palming firmly at it. "You'll have to do better than that."