Responses
Okay so this is how I understood it.
When they died in their first life somehow Humin was able to make a world for them and they were friends, but this was in his mind. When he woke up as the book Humin what had really happened is that Ihoen (or however you spell it) turned time back. The world Humin created was a mechanism to cope with what had happened. But I'm not sure how time was turned back or if I'm right. That's just how I understood it. Hope it helps or makes some sense
Wait is this regression or iseksi or both @.@ some people are saying huimin's other life where he was a happy kid with parents and bestie was fake @.@