[Prompto didn't know what happened. One moment he was completely calm and in control, then the next Noctis ordered him to get off and he felt like if he did, he'd lose Noctis forever. He didn't want that. Noctis would be his, damnit! Suddenly all he wanted to do was prove that Noctis wasn't human. He needed Noct to accept that.]

Feel your teeth!

[Prompto did it for him, pressing down harder onto Noctis while he moved a hand towards Noctis' mouth, cupping the side of his face as his thumb pressed into Noct's mouth to press against one of his fangs. The sharp fang easily pierced his toughened skin like it was nothing even as Prompto was careful not to have his claw scratch the inside of his mouth. He preferred to see his marks.]

Weak little humans can't even hope to do what you can. What you did. You drained that man. Fucking killed him. And you loved it, didn't you? The way his heartbeat slowed. The light fading from his eyes. But most of all, that blood. Thick, and warm, and so delicious. You're cold, Noct. So very cold, but that warmth must have felt like heaven.

[Prompto stared at Noct as he spoke, kept his thumb in Noct's mouth. Teasing, tempting, and shoving the facts in Noct's face until he accepted them.]