Character: miles yellow

Miles Yellow is a 19 year-old fox boy (owned by MileyMouse]
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Miles is a young mage who studies and practices magic, and specializes in transformation magicks.
His signature spell lets him transform himself into a girl version of himself.He travels the world with a bag of books on magic, he studies them and practices his magic all over!
He wants to become a magic savant someday, being able to use his spells without taking the time to cast them, or cast them silently.His Curse:
When training a very advanced spell for his age, it backfired on him and caused a permanent curse to take affect.
Whenever his penis penetrates someone without protection, the one being penetrated will start to age backwards.
How much they regress in age each thrust depends on how horny he is.
If he pulls out without ejaculating inside them, they will return to their normal age over several minutes.
If he does ejaculate inside of them, it will lock them at the age they were currently at, and they will have to age normally from there.
It is his penis that carries the curse, his cum is unaffected.
This is why he sometimes takes the form of a girl when partaking in sex, so that he won't accidentally regress them.As described before, Miles can change his entire body from male to female, and vice-versa.
It's an advanced magic spell that he has mastered fairly well, and can cast at any time and for as long as he wants.Whenever he casts the spell, his entire body changes, anatomy included. Which means if he changes to female, he could technically get pregnant.
His curse also doesn't take effect when he is in his girl form.
He does, however, still occasionally finish prematurely, even as a female.
Age: 19
Height/Length: 173cm (5 foot 8 inches)
Weight: 54kg (119lbs)
Orientation: Bisexual, preference towards girls.
Penis Size (when boy): 7.5cm (3 inches) flaccid / 14cm (5.5 inches) erect
Breast Size (when girl): Medium/Large (C)