I just read the last and the first chapter and bro they were giving hints all the time. So iheon was first in the silence book, after he died he was sent to this alternate kind of world and became friends with huimin, whom had forgotten his previous life's memories (in silence) he also mentioned that while reading silence he felt like he lived what happened in the book (in the first chapter)
So in conclusion, they both lived the life in silence, they both were reincarnated into another world (huimin is without his memories) and both transmigrated again to the beginning of silence.
I just read the last and the first chapter and bro they were giving hints all the time. So iheon was first in the silence book, after he died he was sent to this alternate kind of world and became friends with huimin, whom had forgotten his previous life's memories (in silence) he also mentioned that while reading silence he felt like he lived what happened in the book (in the first chapter)
So in conclusion, they both lived the life in silence, they both were reincarnated into another world (huimin is without his memories) and both transmigrated again to the beginning of silence.
I did not expect that