This running theme means when dwellers of one world are sent to another one. Whether it be people from one world are sent or travel to our world.

Or when we are sent or we travel from our world to another one.

It can very. But favored towards fantasy.

Of being sent to our world Fantasy examples.

- the devil is a part timer!?

[There should be a GIF or video here. Update the app now to see it.]

- Fate/ series

Being sent from our world examples

- Konosuba: god's blessing on this Wonderful World!

- Re:Zero Kara Hajimeru Isekai Seikatsu