It had been two weeks since Tails had found Sonic, broken. The hedgehog had moved to her own bed now.

Tails walked into the room with Sonic's lunch, a plate covered in chili dogs.

"Mmm! Thanks Tails!" Sonic said.

"No problem!"

The two ate together, talking with each other as if Sonic hadn't been raped and sexually altered.

"Hey, um, Sonic?" Tails asked, a blush forming on his face.

"Yeah, bro?"

"Um...if you don't mind, I'd like to, ah, test out your...parts"

"O-oh" a blush formed on Sonic's face as well. "U-um...sure"

She removed her blanket, revealing all four of her breasts, both of her members, and her set of quadruple balls.

Tails reached forward, a curious look on his face. He made contact with the breasts first.

"Oooh..." Sonic moaned. "Eggman made them...really sensitive..."

The feeling of her breasts being touched turned her on, and Sonic's members proved that, rising and becoming hard.

"O-oh god..." after a bit of rubbing on the breasts, precum was already dripping out of both members.

Tails himself was actually turned on by this. A lump began to form in his pants as his own erection grew.

"T-Tails...please...ah...fuck me..."

"Are you sure you want me to?" Tails asked.

"Yes...fuck me now!" Sonic wanted it. She spread her legs and lifted her balls, revealing her vagina.

Tails nodded and began to remove his pants. His member of 8 inches slid out of his pants, fully erect.

He walked over to where the blue hedgehog was sitting, fingering herself. He angled his member at her entrance. "I hope you're ready!"

"J-just do it!" Sonic cried out. It seemed that the libido mentioned before didn't go away.

Tails thrust his member deep inside Sonic and began to pump in and out immediately.

Sonic's body moved as she stroked both members with her hands, working to get herself off. Her breasts did something new as well; they were spurting out small jets of milk.

"A-ah! Faster Tails!"

Tails complied, speeding up. The inside of Sonic felt like heaven! It was no wonder Eggman enjoyed it so much!

Sonic enjoyed the feeling of Tails inside her. He wasn't gigantic like a human but he still managed to fill her.

Tails pumped in and out, occasionally reaching up to rub the members, or the breasts, or sometimes licking up the milk that was beginning to pool. God, that milk was delicious.

Finally, Tails came in Sonic. However, he didn't feel tired at all...in fact, he wanted more.

"Sonic, I thought the effects wore off after an hour"

"I guess I...have so much...it's permanent..." she panted. "Keep going...I want...to cum..."

Tails nodded again and got to work. They went through the whole process of thrust, rub, and lick all over again. This time, Sonic came.

"AAAAH!" The semen, produced in large quantities due to the large size and doubled amount of Sonic's balls, came flooding out of both dicks. As the force ruptured through the members, Sonic's pussy pulsed and squeezed like crazy. This pressure forced Tails to cum again.

"AAH- MMPH!" Tails was cut off by a veritable portion of Sonic's cum landing in his mouth. He swallowed it.

Salty and sweet...wait...what's this tingling?

Tails pulled out and looked at his member. To his utmost surprise, it was changing! It began to grow longer, and got thicker as well. It was equal to Sonic's size now!

"Sonic, is it supposed to do this?" he asked.

"I...I don't know" he admitted. "Eggman never...swallowed my cum..."

Tails felt his lengthened member. It was more sensitive.

"We should probably stop" Tails thought. But he was so horny! It was getting hard to focus on anything other than this massive thing.

"Mph...Nevermind, I need more..." Tails moaned. He began to align himself again.

"N-no...i-in my ass..." Sonic requested.

Tails moved down a bit and pressed against Sonic's rear. He managed to fit through perfectly, and got his entire length inside. He began to thrust, hard.

The two were crying out in ecstasy as Tails fucked Sonic over and over.

"AAH! OH TAILS! OH GOD, TAILS, MORE!"

Tails heard the cries and leaned forward. He began to suck on both of Sonic's cocks. He NEEDED more of that altered cum.

"NYAA~!" Sonic said, loving it. She began to gently move her hips, gyrating around Tails' dick.

Rather quickly, Sonic came in Tails' mouth. "AH! AH! AAAAAAAAAAAAH~"

Tails worked to swallow all of the semen flowing into his throat, the magical seed already beginning to alter his body and make him hornier.

Tails' balls increased in size as the cum flowed. When they reached 3 inches, the flow of the energy from the cum moved up to his chest. It was there that breasts began to form. They grew outward from his torso, becoming softer as their expansion ended at b-cups.

"Oooh, Sonic~" Tails moaned as he felt his new parts.