Ryuji tranquil sleep was interrupted by the new reality he now found himself in. He had used the Chronivac to turn himself into a 13 year old shota femboy and his sister/mother into domineering amazons, but they had stolen the device and now chose to make themselves 7 foot futas. He could feel his mother Yuno in a deep sleep below him, her thick arms locking him into an impossible bind. Her new futa cock was fully erect between his smooth thighs and rubbed against his tiny locked clitty with every breath she took. The size difference make Ryuji embarrassed to even look at it - it must've been at least 10 inches compared to his caged pathetic 1.5 inch micropenis.
His sister Yoko had waken up and noticed Ryuji struggling to free himself from a slumbering Yuno. She was wearing nothing but a leather bra that held her massive breasts and leather gloves/boots. Although she was in heels, she wasn't nearly as tall as Yuno but still sported an impressive 9 inch cock that she currently was rubbing. She only smiled sadistically as she positioned herself on top of the bed, mounting over Ryuji's face.
Ryuji could do nothing as his amazonian sister forced her entire shaft down his delicate throat. At first he thought he was going to gag, but it went down deep surprisingly smoothly. As she pumped more and more, their sleeping mother's erection also began to thrust between Ryuji's thighs, continually bumping into his little cock. The pleasure from the friction for both futas eventually got to be too much and they released their massive loads into Ryuji's mouth and over his pink chastity cage. Yoko's cock was so deep in Ryuji's mouth that he was forced to swallow the entire load. His new femboy body responded to the pleasure by leaking his own load out of the cum-covered chastity cage while he whimpered in pleasure.
Yuno had woken, still basking in the afterglow of her first male orgasm. "Oh my, did our little sissy have a cum accident just from being throatfucked? I'm afraid that will have to be punished". Ryuji whimpered. Although they just had finished a massive fuck session, he knew that his mother and sister had bodies programmed to be insatiably horny. He could only shudder at what they had planned for him next...