(Author’s note: to avoid confusion, Jeff will just be called cock/the cock and Riley Two will now be Jeff, “Jeff” or Jeff’s clone).
The new Jeff walked through his home spotting some differences with the one of his dimension, noticing he was alone since he used his knowledge again to know that his parents went on a trip together and Riley was still in school but shouldn’t take long.
Suddenly “Jeff” heard the door open in the floor below, he grinned knowing that it was Riley while his cock twitched harder. “Complain all you want you COCK, you’re mine and you’ll stay like that tasting my cum and piss forever!” He laughed as the cock who used to be Jeff struggled, with his entire existence attached to the ballsack and bladder of his evil clone. “God this body of yours feels incredible” he said while going down the stairs.
Riley closed the door and gave a few steps just to stop after he looked at his brother, grinning in front of him.
“Ummm, what’s so funny Jeff, get out of my way, I have to finish my homework” Riley kept walking and sighed, but then he noticed that he couldn’t move and was frozen in his position. “What the-”
“You should respect more your brother!” Jeff giggled. “It feels weird to talk to me” he whispered to himself while giggling.
Riley managed to hear that last sentence. “What do you mean? Jeff are you dumb?” Riley said angrily but felt an ominous prescense from his “brother”. “Are you… Jeff?” He sweated.
“Of course I am little bro, aren’t you looking at me?” He smiled approaching Riley while the bulge in his pants was more visible each second.
Riley thought it was some kind of cruel prank, he wondered why his body didn’t obey him and didn’t move. “Jeff! You’re scaring me stop this now.” He noticed the big bulge in his pants, “Wha-what the fuck!?” The 14 years old yelled at his supposed-to-be brother. “You’re not Jeff!”
“I’m glad you guessed, nothing less to expect from me!” Jeff laughed, using his powers to change his head into his real one, the feminine version of Riley while still having the body and massive cock of a man. “Doesn’t I look familiar?”
“You look like me! But how!? Who are you!” Riley screamed.
“You see, your dumb brother, OUR stupid brother had a powerful computer capable of giving him anything he wanted. He wished he had a better relationship with you… and his idea was to bring me! A Riley from another dimension to help him with his family issues, but fortunately or rather his bad luck I transferred all the computer power to me! And have all the power I want” the second Riley evily laughed.
“A-and where’s the r-real Jeff, my brother” Riley said nervously.
“It’s better if I just show you” Riley Two said, removing all his/her clothes, leaving the pants for the end to show the giant trunk as a penis. “THIS is where he is” Riley Two kept laughing. “This is what he deserves for being a dick, so I took that literally and transformed him into mine! While stealing his body to mess with him even more” the cock drooled a bit of cum from its tip.
“No… no! Please let me go, I won’t tell anyone” Riley prayed.
“Oh, don’t worry I know you won’t, because I’ll make your brother’s dream real… making him close to you!” Riley Two said while turning her head again into the one of Jeff, approaching the boy Riley.
“No! Sto-” he said as his last struggles, while his head was pushed to “Jeff’s” ballsack, feeling the massive cock rubbing his hair. “Mmmph, mmmmph!!” Riley struggled as his mouth fused with the area below the cock his brother was turned into, going through the same exact process, making his limbs disappear as his head sank into the body to finish his transformation, Riley’s mouth was connected with the testicles and bladder of the Jeff clone, while the process was entirely pleasurable for him. After all of that, “Jeff” adquired a second cock attached below the other, cumming from both of them at he same time, as he moaned the brothers felt like farting his fluids.
Jeff was still standing, looking down at his masculine body with two enormous 10 inch long cocks stuck in his crotch, both of them twitching and making him moan. “Now you’ll never be separated!” He grinned.
He looked at the floor, besides the cum he produced there was his and Riley’s clothes. “Nah, I don’t need those, a greater being like me shouldn’t wear clothes, from now on everyone will think is normal to see me naked and with two cocks. Also everyone will still remember Riley but not knowing where he is” with that said Jeff felt like the world moved a bit, result of his powerful wish.
“Jeff” smiled, seeing that everything was going as he wished. “Let’s see what else can I take from you, my lovely cock” he giggled resting his hand on his upper cock, formerly Jeff, “maybe your parents would be fine additions to my powerful body, or maybe your girlfriend or friends. I could even turn them into something to use or a snack for me! So many things to do and you can’t do anything to stop me heheh” he kept walking through the house ignoring the clothes in his naked body.