The soul of Yua in the body of Marie sits in a Japanese room, It looks like a modest apartment. It has a simple look with a small bed, a table with a Kotatsu, a desk with a PC, a window overlooking a city that looks like Japan, and a doorway that leads to a sort of a common kitchen, a bathroom, and the front door.
I came to this place because of the Princess, did you kill her?"
"No, You were her, you just have forgotten your memories as a princess. You just seem to have forgotten them after regaining your memories as Yua… You were poisoned so the failsafe I put in your soul activated and your old world memories came back, although you seem to have forgotten this world's memories."
"I see."
"While the failsafe was activated I had to make a few slight changes to the body..."
"Wait I think I can remember a few things… My name is Marie Van Zafforhoff and I am the second princess of the Zafforhoff kingdom. My father is the king and… I don't know about my mother…"
"That is the new you!"
"I guess… so what is this place anyway?"
"I based it off of what you think your home would have looked like in the future."
"So, is this home right outside of Tokyo?"
"No, this is your mind, I made sure you never forget your previous life so I stored all your memories in this place."
"So it's sort of like my own Mind Palace!"
"This room is, as you say, your Mind Palace, if you ever wish to recall your memories from this life or the last one just go to the computer."
The Goddess says with a smile,
"This place is really nice, I might visit sometimes to chill out from my continuous Death March."
I thought gods can't get fatigued?"
"It's not fatigue, but more of boredom, I get bored from time to time, So I might come here to relax every so often."
"Ok…"
"You can also look at any paper or item and call upon your memory of what the item looked like to make it, whether that be food recipes or weapons."
"So now that you know this, remember you can always come back to your memory palace!"
"Ok! I will."
Marie walks out the front door and suddenly the young eyes of Marie jolt open.