Without so much as a "how do you do," the other mouse clambered atop Nathan, who remained motionless in shock until...
"Hey!" The Chronivac-transformed teen squeaked. "What's the big idea?"
The other mouse, introduced by Nicolás as Óscar, mounted with precision the female mouse that had so serendipitously appeared in its cage. The excited male mouse produced a barrage of ultrasonic squeaks, or "sweet nothings," for Nathan's ears alone since the sounds registered far too high for Nicolás to hear.
Nathan's own squeaks of protest grew weaker and less urgent as Óscar's lusty squeaks and energetic thrusting worked their magic. To his shock, Nathan found himself enjoying the sex until he heard a peal of laughter from outside the cage. The puerile interest of the housekeeper's son would have colored Nathan's cheeks if they hadn't been buried under a coat of short white fur. His whiskers twitched as Óscar nipped at Nathan's nape and increased the momentum of his thrusts, his murine instincts in overdrive at his excitement at finding a female of his kind sharing his cage after months of celibacy.
A knock at the door to the boy's room delivered a summons from his mom for Nicolás to come to dinner. The boy stood and turned his face from the spectacle inside the cage.
"Wait!" Nathan squeaked. "Don't leave me in here with..."
Óscar produced more of those ultrasonic squeaks and Nathan's emotions spiked in all directions as Nicolás closed his door on the way out of his room. The squeaks battered at Nathan's feeble resistance. He felt Óscar's heavy weight on him again as the horny male mouse prepared for round two.