The Esrevinu is pretty much an inverted version of the Universe, but is also bigger. Like, indescribably bigger. The esrevinu was created as the result of the Loopholeverse flipping inside out due to ERRORverses. Due to the Loopholeverse flipping inside out, since it's an open 3d shape, when it got inverted, its size stretched out into... well, itself. There is no known proof of the claim that an inverse multiverse exists, but is HAS been hypothesized, as SOMETHING has to contain the Esrevinu. If nothing does, reality would break, right? However, this has been mildly disproven, due to the fact that end all be alls have already been surpassed.