In the midst of the rampage of cursed spirits in the middle of a city, the strongest sorcerer of the modern era leaps into action. Satoru was taking down multiple curses at once with just a flick of a hand. Something caught him off guard, a portal swallowing him whole. The next thing he knew, he woke up in the middle of a city in another world

And here he is explaining how he got there to someone that looks almost identical to him.

"So you know, I woke up in this place, and you found me."

Satoru explained in complrte confusion as he scratched his head whilst looking around the room and then back to the man in front of him.

"So I'm in another world? How come we look exactly alike? Like weirdly identical as if we're twins."

He exclaimed in realization. Question followed after another.