"...A monkey boy." Said Jeff.
"What?" asked Dean. "No! Make it stop-Ow!" Dean's spine popped as new tail grew out from the base of his spine. He was forced to pull his pants down to let his new appendage out. "Stop the change quick!"
Jeff sighed. "I told you we should have read the manual. I can't stop it once it start."
"But I don't want to be a monkey!" said Dean. Jeff turned the screen to Dean:
Name: Dean Miller
Species: Human
Age: 16
Height: 6' 2''
Intelligence: Human(Modern)
Sexuality: Bi
Aware of change: Yes
Mental Changes: no changes
Name: Georgy
Species: 'Monkey Boy'
Owner: Jeff
Age 2
Height: 2' 1''
Intelligence: Human(Primitive)
Sexuality: Bi
Aware of change: Yes
Mental Change: 7% Original, 93% New (Cannot resist new form's impulses. Remembers old self, but has limited memories of past self.)
Tail: Sensitive(Orgasm inducing)
"What kind of changes are those?!" cried Dean.
"It seems like it chose the the closest person to be your owner, 'Georgy.'"
Dean's body proportions shifted quickly; making him look more like a monkey. his arms became long and lanky, and his face changed. His jaw was less prominent and his brow was more pronounced. His ears enlarged, and his nostrils flared out. Dean felt his feet changing. He took of his socks to see his big toe separate from the others; moving back and becoming more dexterous, while the other toes became longer. He looked very much a monkey boy now. Jeff walked over and smiled at Dean.
"What are you smiling at..." Dean trailed off as Jeff grabbed his tail and began stroking it. Jeff watched Dean's jeans tent. Dean gasped; falling to his knees while Jeff stroked his tail faster.
"W-what are you doing Jeff?!" Dean moaned as he came in his jeans.
"That's 'Master' Georgy, call me Master."
The chronivac took the opportunity and began converting Dean's mass into cum, speeding the changes up.
"What...going...on?" Dean's mind was growing cloudy. He was finding it hard to focus on anything but the sensations from Jeff stroking his tail.
"Jeff, please stop...Wrong. This wrong. stop... No...keep going. More...Master! Ook! Ook!"
Dean's clothes had become very baggy. Cum flooded his pants as he continued to shrink. He climaxed with a loud monkey screech. He collapsed; buried in his cum soaked clothes. He escaped the pile stark naked. His body halfway between man and monkey. He absentmindedly picked his nose before He looked up at Jeff's giant form.
Dean, now Georgy, walked on his knuckles and feet over to Jeff. He grunted and made clicking sounds, wishing for his master to pick him up. Jeff picked him up, and placed him on his head. Georgy began picking through his master's hair. Jeff on the hand, turned back to the Chronivac.
He decided he'd change something about himself. He liked some of the things that happened to Dean, and they gave him ideas.
Jeff began typing in his desired changes...