Portals of the Celestial Fox: Volume 1: Discovery

There are portals to another world all over the city.

And only I can see and open them.

That's what I discovered when I got sick and tired of being shocked by these only-visible-to-me floating purple things and tried to rip it apart... only to literally rip open a portal into a familiar place from a VR game.

What is going on? Was it actually a real world all along? Were the devs aware of it? Could I... smuggle potions and magical items to Earth with this?