?? When is it stated that ML's mother went through the same abuse&SA that Cheongwoo is currently facing?
Or is this a novel thing that was omitted from the manhwa?
DOES she know what's happening to Cheongwoo, what her son is doing and behaving monstrously?
Because she's sent treats, medicinal herbs & teas, homemade food before.
It's typical korean mom behavior.
As for grandma, well what exactly is Cheongwoo contributing?
Has he even been able to send her anything or pay hospital bills & care fees?
He hadn't been able to work for long before he was entrapped again.
Now he's isolated and doesn't have access to anything - no phone, no computer/laptop, hell he can't even handwrite a letter to send in regular snailmail!
I'll have to find & reread that chapter after he escaped and was dressed as a female student.
This is not attacking you nor me disagreeing that ML is at fullfault.
Just want to discuss in case I missed or forgot details .
(=・ω・=)

The person who holds all the fault is ml, let me make that clear.
But the hell you mean his (ml's mother) went through the same thing as mc with (ml's father) and raised a child to be just like her husband? She knows he is acting like his dad but still sends special meals and best wishes, woman you raised a f-cking monster! (Author just Glazed right over this)
Thirdly the only thing mc can do to get away from him, is die. But he probably won't because without him his grandmother (in the hospital) will die too.