worldbuilding / self-lore
time travel exists in Kaito's world but it's useless for all the things you'd probably want to use it for
you could, in theory, load a backup of the entire world into a separate instance of the world's "program" and explore it
but not only can you not guarantee that the actions that occurred in that sub-world after you started running it were identical to what happened in the "canonical" version of events
you also obviously can't make any changes that would propagate
having said that it *is* still useful to recover things thought to be lost to time, lost films and technology, etc.
it turns out the main instance of the "world" keeps backups daily at 00:00 UTC±0 so time-travelling is thus locked to one-day spans all starting at that time