He forcefully turned Mark into a girl

"Sorry Mark, but that is something you should have never seen." John grabbed a syringe full of muscle relaxer lying on his desktop and rammed it into his shoulder.

"What the hell?" He shouted as the liquid got injected into his body.

"You wouldn't believe it, if I explained it." John said and pushed Mark onto his bed. "But your hours as a boy are numbered. Sorry my friend." John **** the clothes off Mark. The naked boy was too confused to even try to fight back. "You have quite the slim body. I'm sure it'll look beautiful once it had changed." John pulled out a box from under his bed and took out a bottle. He filled his syringe with its content and injected Mark's body with it. It immediately started to get smaller, softer and even slimmer than it already was. John injected a second fill. Mark lost more of hiy body mass as the body turned into that of a slim girl. Even his face got softer and already lost all prominent male features. "Your waist is pretty slim. Just a little more hips and chest and it would look perfect." John injected Mark's hips with another liquid that caused them to grow wider.

"What are you doing to my body, John?" Mark asked totally surprised that his body had become so small. He tried to get up, but John just pushed him down.

John didn't answered. Instead he filled the syringe with another liquid and injected it into Mark's chest. He injected three more fills so it was two on each side.

"My chest is burning." Mark said and put his small hands on it. Just seconds later he saw and felt two round breasts growing out of it. "Tits! you gave me fucking tits!" He exclaimed.

John pulled his hands away and looked at them. "Yep, beautiful D-cup breasts. Perfectly matching your slim body." He let go of Mark's hands and searched for the next thing.

"You are turning me into a girl!" Mark exclaimed and grabbed his breasts again.

"Yes, I am." John said and grabbed Mark's face. "And I'm turning you into a beautiful one." John put a brush on Mark's lips and painted them in a light red. Tears ran down Mark's face as the lipstick burned into his lips. "Maybe a little more volume." John took another syringe and injected ever lasting collagen into his lips until they were matching his slim, girly body. Next John glued false eyelashes to Mark's eyes and applied small amounts of black mascara and some light eye shadow to his lids. "Just some basic make-up for your daily life." Mark's face now was made up like a young girls, which matched his transformed body.

"Why are you doing this to me?" Mark cried as John painted his finger and toe nails red.

"Because you had found things you souldn't have. And now you have to life with the consequences." Next John took a cloth and wiped off the hair on Mark's body. He turned Mark bald and left only two small arcs above the eyes and his false lashes. The new round breasts he wiped with extra ****. A light moan came out of Mark's red lips and his penis twitched a little. John went further down and gently stroked the penis for a little until it got a little hard.