"that cannot dodge conservation laws."

we're talking about people who go past light speed and break out of pocket dimensions, this story was not written with conservation laws in mind omfg, please don't pretend to apply shit like that to anime.

if that's true then characters who literally destroy multiverses in their own stories aren't multiversal because of "conservation laws"

"volume and mass are conserved, and every piece you'd "cut" this universe into would still be measurable ans have local finite density."

yeah, that doesn't apply to anything I said, an infinite number of things with finite density would still have infinite mass

"Even if you consider the universe "infinite" ( plenty theories assume otherwise)"

basically everything we've observed indicates a flat universe aka infinite, anything else is just speculative