Originally Posted by
fumei
This remind me of this really good crack theory from like 2019 about Halloween. Essentially, it posited that Liz's castle during halloween acted as the linchpin (like Rhongo) which held "halloween" in place for those three years, and when MHXX cut it apart in the last one, the texture of the cultural concept of halloween disappeared. The period of October was then conceptually treated as "blank", because halloween events used to start way earlier than actual halloween, and after this happened, it happened much later, while also not really being a halloween event. Basically, the idea was that the "common sense of halloween" was changing due to being encroached upon by that of another universe (the Servant universe). It more or less followed the exact case model that is presented to us for how Lostbelts work, and also somehow related to Salem a lot I remember (because of outer gods but idr exactly what it was). Basically this:
Liz uses her castle to "pin down" the concept of halloween similar to how textures are pinned by Rhon etc (that's why it's a recurring event especially here where it's almost like direct continuations)
In Salem, Raum uses the silver key in an attempt to bring an outer god into the world to bring salvation to humanity, and even though his plan doesn't succeed, it sort of creates a "bridge" between earth/our reality and outer/deep space and the outer gods (because it's been stated that they just need a tiny bit of access to get hold of reality or w/e) which is how new foreigners can keep appearing and going by these theories it's also what allows characters from the servant universe (or at least the deeper parts of it) to appear
In this case, MHXX who is from these deep parts and has some vague connection to outer gods, is able to appear later on, and after 3 years she appears in halloween and cuts the castle that is holding Liz's halloween texture in place
The halloween texture disappears without something holding it in place -> there's a period of "blankness" -> in the place of halloween there's now something entirely different trying to encroach on it (saber wars 2)