Rex's Clothed Female, Naked Male Tales
At least 3 years after the events of Xenoblade Chronicles 2, an adult Rex became bored after a long period where nothing happened. His solution was to take off his clothes and be naked in public. When he revealed his fascination with CFNM to Pyra, Mythra and Nia, they offered to help him out with his kinky needs.
Pyra, Mythra and Nia had a secret resistance bet, unbeknownst of their beloved Rex, that if any of the 3 could fully resist of caving in to ask him for sex at week's end, then the winners would earn bragging rights, but if all 3 failed before the deadline, then the 3 would have Rex know about the bet and decide on their punishments. Request from ultimateCCC.
Overflowing in More Ways Than One
Pyra, Mythra, and Nia sat down with Rex to warn him that at the start of Sunday at sunrise through the end of Saturday at midnight, their respective sex drive will be at an all-time high due to the Aegis energy overflowing them and it's up to their beloved to handle all 3 each day by filling them up no matter what. Request from ultimateCCC.