You can see a black haired girl sitting on the bed with her back facing you. She is similar in size to you, if not just a tiny bit shorter, and this made you worry that you may be in the wrong room. But then the girl turned around and you recognize her face immediately. It's your own, well your new one at least.
She seems to be just as surprised to see what basically is her own reflection staring back at her, mouth agape. Then her eyes trail downwards and she becomes instantly upset. You look down to see what was making her so mad, but your large boobs make it hard to see much of anything below them. You try and move them out of the way to see what made her upset, but it isn't that easy.
"Oh my god, are you trying to show them off?" The girl suddenly snaps at you. You look up at her and let go of your boobs, which bounce just a bit as they return to their normal places. Again, the girl suddenly gets even more pissed at you for no understandable reason.
"What? What did I do?" You ask, completely confused as to why this girl dislikes you so much. But reguardless, you need to find your wife, so you look around the room to see if someone else was here who you could recognize, but obviously there wasn't. And the whole point is to not be recognized anyways, so that idea was doomed already from the start.
You then do the only thing left that you can think of. Ask the girl about your missing wife. "Um, excuse me, but I am looking for my wife, Debbie. You wouldn't happen to know where she is would you?"
The girl turns back around to look at you and her expression changes from anger and jealousy to realization as the pieces fall into place inside her head. "Did you just say you are looking for your wife, Debbie?"
"Yeah, I was told she would be in this room, I think. Do I have the wrong room?"
The girl shakes her head. "I am named Debbie, and I think you are my Husband."
Now you understand. This girl is your wife! You join her on her bed and just spend a minute looking at each other. You both were practically identical in almost every area. Almost every, as your new breasts are clearly larger than her's, and by quite a bit. Your D's dwarf her maybe B cups at best. Your ass is also slightly larger, and you are a very slim amount taller. But aside from those things, you are identical. You even have the same small mole on your left shoulder. As one of the very few blemishes on your body, it was a clear indication that you both were designed to be identical, teenaged girls, maybe even twin sisters.
The Doctor who is was standing outside comes into the room to explain what will happen to the two of you now. "I see the two of you are doing well. Let me jump right into this then. You both will be remaining here in Tokyo for the foreseeable future. We have an appointment all set for you too. You both are now 18 year old twin siblings. You are not required to attend school, and actually we would prefer you do not commit to anything long term, as the date for the trial, while isn't established yet, may come at any time and we will need to leave here to attend the trial at a moment's notice. So just kick back and relax while not drawing too much attention to yourselves. Maybe get a part time job or something, and be sure to stay out of trouble. But for starters, Debbie, your new name is Shizuku, and you are now Yurina" says the Doctor, ending his brief introduction while looking at you. "Now then you sisters, please follow me to the next room. I will introduce you to your official handler. She is one of our best agents and I am sure she will be very helpful to you girls. For her cover, she will be posing as your Mother as well, so do try and get along."