Where am I?

While meditating in the plain of Euthimya Ei was suddenly transported into another world. While exploring what appeared to be a city with these mettle charges that move on their own.

(A/N This story takes place in the 'Isekai'd Multiverse' which is a series of stories caused by the same 'thing', Some things in the stories may spoil some big reveals in this story but are important if you want to understand the full story. List of all stories in cannon: That Time I got Iseki'd Again and Met a Slime Friend, Act of Love, Rot no More, Eternity of Live, Re:World)