
Is the dad restored too or are we restoring shits one minute ago?

I don't think so... He voluntarily took himself out of the 'story' to create a scenario where Mirae can live in peace without dying. You can say he erased his fate to exchange it for his son's future and erased himself from existence, that's why Mirae feels connected to him but will never know who he was.
I'm pretty sure Mirae's mom either because her fate was to die and come back as a zomgan to guide Mirae towards his power hidden deep inside. Her and his death was necessary for their son's growth.
The zomgan that came back might be ones that were not fated to die when they did, since Mirae is the 'protagonist' of the story his father created. It resolves around him, his fate

Imagine being totally innocent with severe social anxiety and people turn you out to be a witch and get you killed. This is what everything totally is. Mag being the total victim a prey for everyone who she haven't even done anything wrong. Dang at this point I don't care if she burn everyone. She's named a witch already might as well be as one if it were me.
So what now? Since the South killed Mag in her first life this is the North's time to kill her too? What type of fate does this girl have? Someone to be killed? Always the scapegoat?
i hope she can escape from the cycle and be free