One night in some random suburb right on the border or a large city lived some guy called John. He was a generic guy, short black hair, brown eyes, pale complexion, just generally that guy you probably never noticed. Not that loner kid either as he had a couple of friends. He lived at home with his older sister who was going to a University in the nearby city who he barely interacted with, and his mother who taught Spanish at his high school. Then while playing some video games a voice popped into his head "I am the God Chronos, Would you like to be my chosen and inherit some of my power?"
John looked around unsure of what was happening and asked "hello?" timidly.
"You heard me, I'm Chronos the old Greek god of Time! What I'm offering you is power over time! You simply have to become my chosen holy one and help with granting prayers when you can." The random voice out of nowhere explained.
John chuckled and said "...I may just be going crazy or something... Or some invader has just decided to mess with me without stabbing me..." However quickly as John attempted to press the buttons on his controller quickly noticed that it was impossible to press any buttons... and the resistance... John let go of the controller and simply watched it hover in the air.
The disembodied voice claiming to be Chronos explained "And that's one of the things you can do if you accept. Freeze things in time relative to the Earth." In John's mind he was mostly thinking YES YES YES, but also the slight curiosity of why him? "And if you are wondering why... Well something something your family has the strongest capability for magic in this area, and obviously your mother isn't a virgin and..."
John muttered "I don't need to know that part of my sister's life... So I accept and you give me time powers in exchange for doing a few Prayers?"
"Indeed, will you accept?"
Seeing absolutely no way this could go wrong the short sighted John said with a grin "Sure, sounds like a good deal!"
"Alright, allow my power to flow through you." John felt a tingling in his body as Chronos' power started to integrate itself into John's body, said tingling started to feel more like an itch, then quickly a major irritation, and then...
"AAAAAAAAAAAAAAHHHHHHHHHHHHHHHHHHHHHHH!!!!!!!!!!!!!!!!!!!!!!!!!!" John let out as he collapsed onto the ground in pain. The magic kept surging in, and the godly power wasn't exactly playing nicely with John's biology. The power was surging and stretching and pulling at his body in odd ways, and his nervous system was signaling their discontent in the change. Without the pain John may have noticed his dick shrinking and chest growing among other changes, but John was having a hard time concentrating on something other than pain at the moment.
John's Mother Cindy heard her little baby's scream of Agony and ran to his room and yelled "John!?!? I'm Coming In!!!"
As Cindy's words reached her child John heard them... kind of distorted in a way? Slower? John's body was still aching, but the pain was subsiding and John picked himself up and noticed an odd bouncing sensation on his chest. Looking down he was no longer quite sure he was a he as he saw two large things jutting from "his" chest... For some reason her clothes changed leaving her in a long blue shirt, some skinny jeans, a small black coat, and her hair was much longer... The door to her room seemed to be opening millimeter by millimeter... an odd thought went through John's muddled brain "...Wait, guy me just screamed in pain... and when mom comes in she'll see some random girl in her son's room with her son missing! What'll she think?!?" John started thinking and decided to...