The Isekai genre is just a Japanese term for falling from one world into another. Be it Wizard of Oz, Alice in Wonderland, or maybe even Peter Pan (if you're the Darling kids). In HP Holo's Monster Punk Horizon novels, it's a common occurrence. Sky portals routinely drop all sorts of creatures from all manner of worlds.
Review: Isekai Skies by HP Holo
Review: Isekai Skies by HP Holo
Review: Isekai Skies by HP Holo
The Isekai genre is just a Japanese term for falling from one world into another. Be it Wizard of Oz, Alice in Wonderland, or maybe even Peter Pan (if you're the Darling kids). In HP Holo's Monster Punk Horizon novels, it's a common occurrence. Sky portals routinely drop all sorts of creatures from all manner of worlds.