Im just wondering what would happen if you can
Probably not, because the shadow worlds are the events from the past (I think), and shadow worlds weren't existing at the time (I think).
What happens though at a point where shadow realm events take place at current era? (Of the manhwa I mean)
I haven't thought about that, maybe the shadow realm events won't take place until the world becomes a shadow world. I don't know what would happen when people enter the current era's shadow world
What do you think?