That day...
The first time Shin took Anko and Elf to the village which was the headquarters of people from the real world...
Anko didn't know anyone there, their faces were all foreign...
Before long, Anko immediately introduced herself.
"Anko Sawaguchi, nice to meet you." She said so nervously, then she also introduced the elf who was nearby. The people in the village came from different countries, they entered that world unexpectedly too, however, they said it wasn't from finding a memory card or anything but playing games which at that time had very limited versions.
As reported from an amazon site, there is a virtual reality game that uses nerve gear that can be played by people all over the world. The versions are limited and each person will have only 1 copy. However, some people had entered this world because he tried to copy a copy of the original game but, not long after, someone who had tried the game died.