So, I was looking at the video on YouTube one last time and found a link. The link led me to this!
The initial website, hence its name, seemed to be a ticket buying website! 😂 So I searched EXO and came across these options.
Sorry for these horrible translations 😂 I'm on my phone and yea, it sucks! I'll try to use my potato computer next time! Sorry!
But, I clicked on one of the EXO'rDIUM things and found this!
Once more, horrible translations via Google and rip screen yeah. But! From the contents of what were translated, it was a concert of some kind. Therefore, I've come to conclude although it was sort of obvious, that EXO'rDIUM has to be a chain of concerts or just world tour? I can't read Korean, so yay for inferring. xP