Omg I thought i was the only one who noticed

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I dont even know if my statement is true. Someone told me long time ago that mc actually have DID. the world he live in before is his painting. He's delusional and regressed along with ml. So I guess he built another personality that are more brave and childish than actual him.

Reminder than this could be headcanon

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I'm pretty sure he transmigrated, but the ml did as well but the mc doesn't know that. So they both try to act like they're the original character from the book.