“Whoever touches these will become a subservient slave to the first person they see, and will transform into their dream sexual object.

It’s very powerful stuff, so don't be foolish.” The professor said, handing Kai a bag with a collar and tie.

“Thank you professor, I’ll make sure to only use these on my most mortal of enemies.” Kai said, respectfully bowing before leaving for home.

He knew exactly what to do with the collar, his step brothers were about to get a rude awakening. They were constantly ridiculing and beating up Kai, teaming up against him in any way to negatively affect him. He might even use the tie on them too…

Once home he went to his evil step brothers’ room and left the collar on the floor, snickering as he heard the two of them discover it.

Wonder which one touches it first, he thought.

Then he heard a low pitch moan suddenly upswing into a girly one, a smack and a giggle came next before Kai opened the door.

His jaw dropped as Steve, his eldest brother now stood proudly showing off a giant bosom.

Kane sat behind her, blushing as he stared into her cleavage. She was sitting in his lap and leaning back into him, so Kai knew they were already a thing. He smiled as he left, knowing Kane wouldnt be able to stop himself from fucking his own transformed brother, even if he wanted to.

He could hear Kane grapple with the morality, and Steve begging for the giant bulge throbbing in Kane’s pants.

Kai laughed as he heard Kane run and slam the bathroom door shut, likely jerking off to stop himself.

Kane came back after coming a few times, and his penis was immediately hard again.

“Like, where the fuck did that collar go??” Steve asked, sounding ditzier than ever as he rummaged through a box.

Kane salivated as he inspected the transformation; his brother’s pants was now barely a mini skirt, and his boxers were now tight purple panties. He felt an overwhelming horniness, and a strong urge to bury his cock.

Kane shuddered as he reached for the bubble but he hadn’t seen before, and sighed as he gave into his deepest temptations.

The sounds Kai heard from his room were unreal; it was like a porn shoot was happening in the room over. The sexiest squeals and giggles came from his brother’s room, forcing Kai to check out the situation.

He had to cover his mouth to stay silent, Steve now had giant tits and was getting rammed by Kane. A puddle of cum and drool pooled by their feet as they lost themselves in the throws of passion, neither one noticing the teenager peeping on them.

Kai decided to give his brother some privacy, and snuck back to his room quietly.

“NOOO!!” He screamed upon entering his room.

He’d been so caught up in what was happening in the room over, he didn’t hear his little brother go into his room.

“Why did you put the tie on??

Are you okay???” He asked desperately.

“I don’t know what you’re going on about, I feel amazing!” Goro said.

Kai did admit, his brother was looking great in that tie… Then it shortened in length, almost cutting in half and now ending with a flat section instead of the triangle from before.

“O shit…” Kai said, fearing the worst.

“What’s wrong Kai? You gotta tell me, big bro!” Goro said, sounding more girly as he continued.

“Shit”

“You’re always so honest with me, just like…” Goro trailed off smiling, and leaned on Kai sexually.

“I gotta go Gor-” Kai cut himself off as he looked up.

He had pushed Goro off him and felt a jiggle, looking at Goro’s chest told him why.

“You totally love these, don’t you Kai?” Goro asked, his voice becoming sweeter and more inviting as his face and hair changed.

“You’re becoming…”

“Your dream girl?” Goro finished the sentence.

Kai then watched as Goro’s shirt shrunk up his toned torso, and unfurled to show a thin, purple negligee.

His jaw dropped as his eyes scanned the perfect cleavage before him, pressed together by firm cups atop the sexy piece.

Kai felt a strange sensation surge through his arms, and couldn’t stop them from lifting up and putting his hands in contact with the bouncing melons on Goro’s chest. He looked at his brother for some form of protest, but none came.

Blood rushed into Kai’s crotch as his hands spread open, his eyes wide as Goro giggled and put his own hands behind his back.

Just as he finished the first squeeze, Goro’s hands came back and slapped Kai’s down!

Goro’s old self suddenly came back, and he tried screaming in terror. His body held it in though, quickly seizing back control and simply staring in the mirror as Goro cried inside.

He could feel the plushy weight of breasts in his hands, but all his thoughts were about pleasuring Kai.

Goro sighed, hating the vivid imagination he had and that is was exclusively devoted to Kai’s body. He gave in to the sucking pressure in his mind, and let the new personality take over. It couldn’t come quick enough, and Goro slowly lost consciousness as he walked aimlessly toward the bathroom. His last thoughts were picturing Kai’s cock in his mouth, and not being able to protest a second man’s penetration; o wait, it was a girl with a strap on!

Kai wished he could help, but his body was acting beyond his control. He followed the solemn goddess into the bathroom and bent her up against the wall, all against his own will.

Goro felt his old self truly dissolve into his womanhood as the head of Kai’s cock opened the folds of his pussy.

The last of Goro’s will held strong for a bit longer, and the curvy slut was embarrassed to make feminine sounds for a bit. She stifled herself so Kai could barely hear her feminine grunts, biting her finger as the thrusting increased behind her.

But soon the hand moved, showing Kai that the real Goro was lost forever. Kai’s body seemed to react to this, and let him pull out of the pulsating folds as loud squeals escaped through the bimbo’s open lips.

“O my god!! Finally!!

I can’t believe I just fucked my own brother!!”

“I’m not your brother silly!” Goro giggled, pushing the celebrating and still hard Kai onto a toilet.

“No! Stop!!

Goro!!!

You don’t want to do this Goro!!”

“Like, of course I do, silly boy!

And call me my real name, Ichika please!

Like, what’s a Goro anyway??” Ichika asked, planting herself on Kai’s erection before he could get up from the toilet.

No answer came from Kai, his mouth was busy with other things.

“Oooo fuck!! Totally bite those things Kai, o yes!!” Ichika screamed between loud moans.

Kai couldn’t help but be concerned about how loud he was making Ichika scream, but he couldn’t stop himself. Now that he listened closely, he could even hear his brother with his new girl in the other room!

He heard muffled words, but could make out calls master and needed to check out what was going on. He managed to lift Ichika off his lap, placing her feet on the ground lightly and grabbing her hand. They made their way to Kane’s room where Steve had turned into a maid, and seemed to be going by a new name. His boobs had grown even larger, and he now wore a slutty maid outfit.

“Pick your legs up so I could get deeper in you, Steph.”

Steph spread her legs so they were no longer wrapped around Kane’s waist, and let him pick them both up over his shoulder.

Kane continued pumping into his friend, unaware of the two figures standing in the doorway.

“This is like, really getting me hot…” Ichika trailed off, reaching into Kai’s boxers while he continued watching his brothers silently.

Ichika put her hand over Kai’s mouth so he could be silent as she grabbed his cock, feeling him gasp verbally into her hand as she stroked the throbbing member.

Kai finally peeled his eyes away from his brother, and was surprised more than even before!

Ichicka’s hair was green, and she wore sexy teacher glasses now!

Kai could feel new cravings reveal themselves as he discovered a new fetish, and couldn’t stop his body from following Ichika as she lead him into the bedroom by his cock.

He planted his lips on Ichika's, and the two embraced passionately as they fell into his bed. Ichika climbed on top of Kai and giggled, letting her hair down as she shimmied out of her negligee.

Kai’s erection slipped into Ichika’s wet folds as she plunged herself down in his lap, panting and moaning as he filled her tight pussy.

Ichika couldn’t stop, and Kai didn’t complain. Neither one getting any closer to climax, but Ichika was beginning to get closer to orgasm as her nipples bounced up and down.

Then they both heard Steph cry out in sheer joy as Kane came inside her, clearly continuing his pumping as he shot into her. The sustained moans and whimpering brought Kai to the edge, and Ichika came even harder than Steph just had.

She shrieked like an over the top pornstar and held her tits against her chest as her body convulsed on Kai’s massive cock, continuing to blast past her climax as she rode Kai.

The two finally finished when Ichika collapsed into Kai’s arms, exhausted but thrilled to be with her man. Kai couldn’t help but worry about what his parents might think with two brothers gone, and two with new, slutty girlfriends...