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Is Dune isekai?
(midwest.social)
No. It's the same world, it's just that the world encompasses both Caladan and Arrakis, as well as well... the rest of the galaxy. It's the in-world equivalent of Paul traveling to another country where he's unexpectedly royalty.
By that logic Star Trek is an isekai.
Welcome to !isekai@ani.social! Discuss here stories where one or more characters get transported/reincarnated into another world.
Short version of the rules:
Long version of the rules here
Have fun!