He shakes more, dangerously close to coming. His face is still buried in Alvin's neck so he can't see, but Darcy's making lewd faces. He clenches his shirt harder. His ears are twitching like crazy, fur ticking Alvin's chin.
"Nhh~ahn~A-Alvin...~Alvin...~"
He's moaning and whimpering softly.