Investigate the magic pendant.

I carefully grab the pendant and cuddle it between Serena's shaky hands, staring at the artifact almost without blinking.
What was that?! A wish? Taken control of this woman's body?! ...Don't tell me that I...

"D-Did I really possess Serena?" I mutter, and my host's soft feminine voice coming out of my very own mouth cements the fact even further.

After a long thoughtful silence, I surprise myself staring down at this body's massive boobs yet again. I just can't help it. Where else can I possibly look at while I have these naked wonders right below my chin?! They are so huge and reach so far that I can even see the fat nipples swaying a little every time I breathe.

Without thinking too much, I give them a nice squeeze, sinking Serena's fingers into the pale flesh

"Nnnngh... huuh..." I let out a happy quiet moan.
Damn it, these fatty lumps feel so good it's not even fair. It's not just the little jolts of pleasure coming from them, but also the warmth they irradiate, and that heavenly softness that makes me want to keep rubbing them forever.

I suddenly snap out of it.

"Ah!" I exclaim in realization. "Shit, I got distracted!"

Where was I...? Oh, right, I was trying to figure out why and how did my life suddenly get turned upside down, or more like inside out.
Actually... forget it. Neither of those expressions seem enough to convey the traumatic scope of the changes I'm experiencing right now. This is straight up fantasy, a fever dream becoming reality.

I quickly stand up while still grabbing Serena's heavy boobs, may it be because I know they will be wiggling all over if I'm not physically holding them or because I'm simply **** to let them go.

I... I think I should dress up.

While it is true that I want nothing but to throw myself over the bed and keep on doing indecent stuff in this wondrous body until I pass out with a dumb smile on my borrowed face, I can't forget the fact that I'm now 'resting' inside a hospital room in a stolen body without the faintest idea of how to move around or how to act like this girl, Serena. I don't even know anything about her even though I'm now... her.

To summarize: I desperately need to sit down and think straight. But existing as a virgin guy inside the naked body of one of the sexiest girls I've ever seen makes thinking straight an almost impossible challenge.

So I carefully pick up the bra from the floor, intending to put it back in place. But instead of doing that, I just keep staring at those massive cups, completely flabbergasted. Seriously, I think I could make two hats out of these and still have fabric to spare. Just what does Serena eat to get this huge up there? Because the rest of her body seems quite slim and fit.

"Did you take cow hormones during puberty or what?" My voice sounds rather intimidated. But then I realize. "...Ah."

I got distracted yet again!

I rub my face in irritation and take another look at the bra. I immediately get to the conclussion that I'm too nervous and aroused to learn how to put this thing properly, so I'm about to throw it away and just put on the uniform without it when I have an idea.

Wait...

I suddenly remember my pendant, and what it arguably did to me. I especially remember about the wish part.

"Could it be..."

I grab the quarz pendant once again.

A wish... If I understood it correctly, this cheap-looking thing can grant wishes.
Maybe I should try it?

I'll start with something small.

"Uh... uhm.... I... I w-wish to know how to properly dress up and move around in this body."

Suddenly, the pendant starts shining with bright purple light.

"Woah!!" I exclaim, throwing it over the bed by reflex.

After a few seconds, the light vanishes and the pendant becomes dim once again.

"Huh...?" I mutter. "Did something change?"

I look around, clenching my hands, doing my best to not fall again under the charm of Serena's chest.
I don't feel any different though.

...Maybe I should test it out?

I grab the bra with a bit of the same hesitation from before. But once my intent is clear, my movements gain confidence and I find myself quickly sliding the upper straps over the shoulders. Then, I immediately bend down and allow my heavy boobs to quite literally fall into the cups while I slide my hands accross to the wing straps.

"Woah..." I mutter with excitement, fascinated by my own actions. I can't believe the wish worked!

I quickly close the hooks over my back while I straighten back up. Following which I spend a few moments adjusting the straps over my shoulders and, before I know, I'm inserting a whole hand inside the cup, manually moving the whole flesh of my breast so it correctly fits within the cup.

I can't help but let out a surprised gasp, taken away by my own actions. It almost looks like I'm kneading a piece of bread dough inside a bowl.

There's no more hesitation in my movements though. And after a few more pulls and adjustments, I've got Serena's chest comfortably placed back within the bra.

I laugh and give the cups a little squeeze(I can't resist the temptation). But by now I've learned my lesson, so I don't get too absorbed and instead I put on the nurse uniform that was lying next to my feet. But I intentionally leave the top unbuttoned. Even though I know I shouldn't get too distracted, I still have to become familiar with the new 'me', in one way or the other... right?

Or that's what I tell myself while I spend a few moments more than necessary adjusting the cloth around my very wide neckline.

"(chuckle)... very well then, now what to do about these... panties...?"

I can't actually do much about Serena's drenched panties.
...or can I...?

I stare at the darkened panties through the mirror reflection for a long moment, thinking.

Then, as if that's the obvious thing to do, I close my hand around the pendant.

"I wish to dry up my panties and legs from all those sexual juices and stuff..."

With yet another shiny purple light, the pendant immediately grants my wish, and I witness with a smile how all the dampness from my crotch magically disappears.

Gory hell...

I let out a nervous laugh.

This thing is incredibly useful. So much it's even scary.

I can't forget about what happened to my now deceased body after all. I don't yet know if this artifact had something to do with it, but all things considered, I definitelly cannot be careless.

After I finally put on the skirt and shoes, I pause for a moment to take a long deep breath, filling my lungs until I can feel the straps of the bra pressing on my back. Then I release it altogether in another long sigh.

Okay! Now It's time to...