No

"No." Mark replied. "I give you free rein."

John thought for a moment, then he had decided. "Ok, then I'll turn you into a girl-version of yourself." Without picking any clothes he went to his bed and pulled out from below it a big, heavy box. He opened it and took a small gas bottle out of it. "Pure female hormones, wrong one." He took out the next gas bottle. "Female hormones and mutagens, close." It followed a bottle with DNA-Rewriter on it. John smiled and put the bottle beside the chair Mark was sitting on. "That's what I was looking for." He returned towards the box and took a device with two small tubes out. He connected one of the tubes with the connector on the gas bottle. Then he took a cannula and injected the needle into Mark's underarm. "I'm going to inject you with this DNA-Rewriter and a chemical to stabilize the changes for two hours." John said and connected the cannula with the space tube. Then he took a bottle with 2-hours written on it and screw it into the device. "Your body should start tingling when the DNA-Rewriter enters your body. With it your body should reform itself into your female version."

"Should?" Mark asked not liking the word.

"I was told so by my teacher. I never tried it myself before." John opened the gas bottle. The gas out of it flew through the tube into the device. It sucked the chemical for the stabilizing out of the other bottle and the mixed and condensed liquid flew through the second tube into the cannula and then into Mark's body.

"It's starting to tingle." Mark said as the mix entered his body. The tingling spread fast, in less than ten seconds his whole arm was tingling. The tingling spread to his torso as Mark noticed the skin on his arm becoming smooth and his hand shrinking. As the hand had finished turning into a girls, Mark's neck, jaw, second shoulder and lower body had begun tingling. "I'm really turning into a girl." He said in a higher getting voice first looking at his hand, then at the two mounds growing on his chest. "I'm even growing breasts." He put his feminine and still male hand on his growing breasts.

John used his state of distraction and injected something into his penis. "What was that for?"Mark asked with his new girl-voice.

"That's for your genitals to stay male." John said and gently run his fingers over his friends penis and testicles. "Else the DNA-Rewriter would turn them into fully functional girl-genitals." He grabbed the penis and squeezed it hard. "Permanent, no way back." He let go of it. "But now you will return into a boy after two hours. In the meantime you are a girl with a dick between her legs." John leaned forward, his long blond hair falling on Mark's growing breasts, and whispered into his ear: "Just like I am at the moment."

Mark's face changed into a girls as he looked down his friends cleavage and his dick got erect. The breast settled at a size similar to John's. John left his friend and went to his wardrobe to pick clothes for him. In the meantime Mark's body finished changing. He now looked like a girl-version of himself, with big and soft breasts, but also with short brown hair and male genitals.

"It's so strange to see, feel and hear my changed self." Mark said and looked over his body.

"Then wait until you are fully done." John returned with girl-clothes or Mark and helped him with putting them on.

"These clothes aren't so bad." Mark said as he looked over his dressed body. He was now wearing tight girl-cut jeans, a perfect fitting gray top with lot of cleavage and under them black panties and a matching black D-cup-bra. On his feet Mare wore a girl's socks and sneakers.

After Mark had inspected his dressed body enough, especially how the top and bra cupped his big breasts, John made his make-up and put a wig with shoulder long brown hair on his head. After he was done, Mark looked like a girl version of himself with long brown hair, big breasts and light make-up.

"And finished." John said. "What do you think?"