Which chapter does Penelope wake up in og world(Korea)

She stayed instead of going back to the real world ╮(￣▽￣)╭

The very end I believe, like the second special ending somewhere.

Oh ok, cause I remember there was a part in the novel where she wakes up, tells her family to piss off cause she won't accept their apology (not literally) and goes back to game world to live as Penelope or something.

I dont think she does. She chose to stay in the game world

That’s correct, she did go back to Korea and does all that and goes back to game family.