enzasti fu'ivla

x1 exists/is real in universe-of-discourse x2

Proposed alternate definition of zasti. See munje, enfasnu, li'i'e. x2 can be lo fatci, or a system, real or imagined, including a "story universe"; thus, e.g. unicorns (probably) don't exist with x2=lo fatci, but they'd exist in the stories where they exist.

In notes:

x1 is real / really exists in this universe
mu'ai (exp!)
munje modal: 1st place; in universe...
x1 happens in universe-of-discourse x2