Decided to try something new with a series of documents going through the idea if Remnant did cross on earth and how I would see several situations or things impacting our world. Hope I did pretty well!
I've been getting these dreams. The dreams where something and everything seems to go wrong. I think it's just my paranoia, but I was never the one who was willing to wait until it did happen.
The world of Remnant is a dangerous world and can lead to many situations in which Earth will be struck with. While I can't predict the method of how Remnant will come with contact on earth, I can say that I do have several theories on how world can converge.
1. Dust crystals
The most possible method of impact. Dust is still highly unexplored in the show and therefore can have the possibility of a 'crossover'. If this is a result of a crossover, find type of crystal or mixture of dust and contact government to inform on this. This could lead to governments to set precautions to dust and therefore inform Remnant so that dust is used less commonly. Possible increase of price on dust may also prevent Hunters in training from accidentally landing in our world. Can determine if someone travels by Dust by examining if people from Remnant have residue on them. Used in "Out of Place"
2. Portal
If either world decides to make a portal and make contact, DESTROY IT AT ALL CAUSES. Portals are an extremely dangerous weapon when handed off to the wrong people and may lead to invasions of kingdoms, countries, grimm, ect. Most preferable before the integration of Earth and Remnant so that they aren't heavily affected by cutoff.. If contact of 2 worlds are too deep for economic or social purposes, best if both worlds dedicate heavily guarded building at each side of the portal so that grimm and minorly armed people don't start conflict. One world only needs to create a portal, but when activated, electrical equipment malfunctions and energy levels spike up.
3. Magic/ Supernatural events
May be rare, but there has been cases of magic being used to travel between worlds in media and from personal experience myself. Magic to such extent is rare with only handful of people of each world earning the ability. Possible to determine if it's magic if multiple people come to our world unexpectedly. Dust usually gives off a type of residue and portals are too large/ flashy to used in secret and in random.
4. A Convergence
In some stories that I have read, they give the possibility of Remnant, part of Earth, or all of Earth being put into a single planet. While interesting in theory, it's not very sound. If land masses as big as Remnants appear out of the blue in the middle of the ocean, There would be massive flooding on every continent and ecosystems would be destroyed by countless life being crushed by a new continent. That's also taking the fact if the Remnant continents even appear on the ocean to begin with. Based on the proportion of the continents, the Kingdoms would overlap with that of ours. If a Convergence were to occur, countless lives, land, cities, and resources would be destroyed even before either side gets the chance to interact with the other at all.
On the event if Earth and Remnant crossover, try to stay in a larger city as being in a countryside may lead to the risk of being alone and with less people to help you if rogue Hunters or Grimm invade. Try nothing to provoke any of the kingdoms of Remnant for the fact that they may see us as violent and without souls backing their cases. (See Aura) If possible, try to scout area with drones if cause is Magic or a 2 way Portal. If you're near Menagerie, set up a blockade or defensive line, but don't enter as human/Faunus relationships have not been the best and may not take kindly to humans invading their land. (Info on kingdoms is on Chapter 2).
Don't know how long this will be, but I'll make more for sure! Hope people are actually interested in this idea, though.