SOUL DRIVERS LORE MOMENT
This is a certified Soul Drivers Lore Moment
So how tf this world works?, Well at the start it was the same Earth just with crazy things, now still being a planet called "The Earth" but with several changes, for example instead of having a ****ton of countries you have 9 regions, each region has very marked traits of the place of the world they are representating, which parts for the moment is a pending but at least there is a region based on Latin America, other based on North America, other based on East Asia and other based on Western Europe.
In this world the magic is usually despicted has a materialization of each one's soul (there is the why of the title), most characters has powers that could be considered representative of them in a way or other but there is also another determinative factor and is the potential. Something more or less based on Type-Moon's magic system and the Mana Circuits, certain persons born with a smaller "output" than others and viceversa with people that has less "input", or in other words they can't do magic or they have more struggles than other persons. Because this there are some characters who has genetic modifications (like Poison/Famine or Frank) and people who uses devices to supply their magical input/output or to boost the former (like Malkovicz or Enzo). There is also what is considered the "true magic" that isn't attached to the soul meaning that you can control what you want (Elise and Ace uses this), there are also species who has access to this type of magic by default and some of them can emm, "bond" with humans like the Tengus (and so the existence of Soichiro).
In terms of time it looks like an alternative present, it isn't a far future with flying cars and hyperspace tralve but it has various technologic advances in comparison to irl. It's like a quite more down to ground version of Guilty Gear world only cutting the more crazy things. We have crazy things thought!, but they are more of magical origin, and of course there is the elephant of the room that its C.O.R.E. since it's an alien, but basically his specie isn't too relevant since it's supposed to be extinct long time ago soooo yeah there are not too much sci-fi elements here....well there robots and a girl who (tries to) travels in time but nothing too crazy! (?
This is what I think it should be the most important things to tell about the worldbuilding but if you think I miss something tell me so I can improve!