You exhale with pleasure as that boy's existence is quickly erased. His family forgets they ever had another child besides Amber, and his body is just a vessel for you to use. Pulling the qipao off, you walk over to the mirror and look at the naked masculine form reflected in it. It's been so long since you had a form all to yourself, and even longer since you had to work from a boy wearing that qipao. Normally it was girls who saw it and were transfixed, instead of that weird white pervert.
Focusing on the body you see before you, you feel an intense satisfaction at the process you know is coming. Having a boy's body to be fucked felt very different from being fucked as a girl- with the horniness, it felt like all buildup and no payoff given how lackluster a male orgasm was.
Despite your focus on sexuality, the first change actually has nothing to do with that. Instead, the boy's hair darkens, his facial features are subtly readjusted, his irises turn a deep brown and his skin goes from pale white to a familiar East Asian tone. You can't help but smile at that- it feels like you're back in your own body already.
But seeing the boy's flat chest and scrawny, curveless figure reminds you you've got more to fix. You've missed having nothing here, you think as you see your nipples widen and thicken, rapidly growing more sensitive. The urge to have them played with and suckled is coming back to you, and it only intensifies as the flesh around them sprouts. You cup them and gasp at how nice it feels to have breasts again.
Running your hands down his torso, his figure curves inwards slightly, and flares outward as you reach his hips. His butt expands with them, and his thighs instantly feel softer and smoother, now devoid of hair. You lick your lips as you see the final feature of his you're yet to change, and set upon it, starting to stroke his shaft and cup his balls.
With one smooth motion, your hand pushes his scrotum and flattens it into a mound, his testicles moving inside him to reform into your ovaries. One finger slowly tapers back and forth over the smoothed skin, trying to push inside it, while your other hand continues to stroke his shrinking penis, which is rapidly becoming your clitoris. At last, having reshaped from a sac into lips, your finger slips inside your new moist passage, and you cum harder than you were expecting, moaning messily and struggling to hold yourself up.
Once you come down from the orgasm, you look in the mirror and smile. You're not a spirit anymore, you've escaped the qipao to enter the modern world!