Haven't really heard of this before, but given just how many reincarnation/transmigration stories there are I figure there HAS to be something like this some where: A story about a person from the past, or an alternate reality or just some faraway planet or place or something, transmigrating INTO something like the modern era. And they have to adjust to be what it's like living in the modern world and that sort of thing, with the knowledge of their first life. I think that would be in so interesting
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