A subtle one first.

While John fully intended to put a bun in that oven soon. It wouldn't be any fun to simply turn his adorable little sister into a slut right away. The pernicious pervert set a goal to work for. Seeming omnipotence is going to get pretty boring if he blew his hand right away.

Instead he resolved to change little Melanie in stages, pace yourself, keep that beautiful petite body, yet also make it more suited for the ravages that will come when he planted his flag.

First was to make himself a little more handsome. With a snap of his fingers John felt his body tighten, as is generic male form became lithe and muscular, not a bodybuilder, but definitely somebody who worked out. He took a sniff proud of the pheromones that were now intrinsically making him attractive to any fertile woman he desired. While Melanie was the primary goal that didn't mean his mother and older sister were safe. John felt his new 10 inch member form a useful bulge, he was sure he'd get some use out of that before he got what he truly desired.

With another snap John's entire wardrobe became much more styled to his new body.

He was still recognisable as himself, it was only if he had his shirt off that you truly notice. It also made the transformation inside less apparent, John wasn't going to little things like stamina get in the way of his new life.

Now for his sister, today was a small change, a little tweak.

He was able to enter the hall just in time to watch her leave her room With a snap of his fingers he gave her a schoolgirl crush he knew would grow into something perverse and beautiful.

Melanie was dressed in her school uniform, pleated skirt and white shirt under a light grey cardigan. She looked like a perfect angel.

"Hey cute stuff," he called out giving her a little cuddle from behind and feeling a surge of victory as he saw her adorable blush.

This was going to be fun.