See: SAO: Alicization where the MC has their memory wiped and lives their entire life inside the "other world" as a normal person inside of it and it's a twist in a later part of the story that he's actually from another world. Nobody would debate this isn't an Isekai despite it not being one canonically until halfway through the season.
Yeah and in that case its a pivotal plot point. My point is most isekai at this point are just c tier fantasy with truck kun slapped at the front. The trope is often used more for marketing than narrative.
See: SAO: Alicization where the MC has their memory wiped and lives their entire life inside the "other world" as a normal person inside of it and it's a twist in a later part of the story that he's actually from another world. Nobody would debate this isn't an Isekai despite it not being one canonically until halfway through the season.
Yeah and in that case its a pivotal plot point. My point is most isekai at this point are just c tier fantasy with truck kun slapped at the front. The trope is often used more for marketing than narrative.