It's a deal!

Henry sat and thought about it, re-reading the contract. Are these powers worth the trade off of giving a demoness control of his body for part of the day? But think of what he could do with those powers...

"Deal!" he signs the page and it vanishes in a puff of red smoke. As it does he feels control of his body return to him completely. No more fighting back. "So... are you going to experiment with your powers or sit here and be boring?" Namaah's voice echoes in his mind. Come to think of it, Henry has never felt comfortable with his body, too many hours playing video games and not enough exercising have led to a build up of fat around his stomach and arms. With these powers though... Moving in front of his mirror, Henry focuses on his appearance, a faint warmth flows through him until it gets hotter, and hotter until his body starts to morph. His jaw becomes more prominent as well as the rest of his face gaining more structure, baby fat melting away. His stomach fat melts too, replaced by a 6-pack which would make a body builder jealous. His muscles grow before his eyes, not too much to raise suspicion but enough to make his topless appearance far more attractive. Finally his cock grows an extra two inches.

"Now we're talking. Look at you already mastering these powers." Namaah sounding impressed. "Thank you, it just felt natural" Henry replies, admiring his new physique in the mirror. "Well, there are still so many powers to try, you definitely need to try mind controlling a girl, that is one of the favorite abilities of any guy."

The only other people who are nearby are his step mother and step sister. His dad is out working late. Zoe is an 18 year old cheerleader. C-cup breasts, long brown hair and an ass which Henry has desperately tried not to stare at whenever she bends over. His step mother, Natasha, has black hair and D-cup tits. She looks young for 45, her yoga routine might have helped with that. Besides those two options there are always the girls at school Henry could experiment with.