
Its kind of complicated to explain but I'll try my best to do it
So :
As we all know in their past lives, the ML treated the MC like shit ( he r4ped him, mentally abused him, etc... ), in an attempt to escape this shitty life the MC draw his perfect life ( with his family, the ML,etc... )
After the MC and ML died in the shitty life, the ML " transmigrated " into the perfect life that the MC had drawn, and found out that their story ( of their previous life ) was now a Novel ( Silence ), he also found out that the drawing of the MC has an ending
So in this " AU " the MC has the personality of the one we know in the present timeline
The ML made the MC read the novel Silence before this perfect life ended
And the timeline we know now is the one after the drawings of the MC ( with shitty life ) came to an end
And the story repeated itself ( so the same as Silence ), but the MC of the happy life kept the same personality and the memories of the happy life ( and the MC just thought that he transmigrated into Silence after he read it in the happy life )
So the MC kinda have DID but not really
I hope you will understand because it's really complicated to explain
I'm not sure but what if it was just a sort of time reset ? ( so more like regression )
His body make him suffer when he thinks that he not the character of the novel, but what if his body make him suffer to make him understand that he is indeed the real character ? And he created his happy life in his head with his sister and everything?
Idk but it makes me thinks of Cozy Obsession