Isekai lovers I have a question!

What do you think is a good ending for an isekai?

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I mean in this sense : I feel like the character going back to their own world (if they got transported rather than reincarnated) and continue with their own life leaving behind the other characters in the isekai is not a satisfactory ending really, especially if there was romance involved.

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But maybe because I'm an overthinker the idea of the character staying in a world that is finite (a novel, game, etc it all ends and has no story after that) feels really unsettling and saddening to me..

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So I want to hear other opinions, in an isekai webtoon, what do you think would be a more satisfactory ending?