
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

A lot was going on in the little of 7 chapters,so I'm gonna list them:
Arranged marriage
Male futanari
Double d!ck (like top had 2 of them)
Double penetration (he used both of them at the same time)
Drug usage
Onahole connection (the toy was connected to the hole of the mc)
Exhibitionism (office and other one)
Bondage
Big d!ck
Mpreg (did not see the child but is implemented)
Wedding ceremony
Attempted NTR (mc tried to but failed)
And I think that is it ╮( ̄▽ ̄)╭
I'm surprised that he remembers all of that events from 6 years ago, I could never ╮( ̄▽ ̄)╭
Same! I would remember stuff happened but the order? Nope. Dates even worse
i can't even remember what i ate for dinner two days ago