I know a little spoiler i can tell u if u want (^_-)
Gooo
the grandparents won't since the grandmother is in coma, which is related to the world tree and some kind of parasite. for the parents, would you still like some spoiler?
Omgg girl gimme spoiler!!
Even you leaving it on a cliffhanger?? Girl please
for the parents, they kinda dope asf lol. after confirming that his grandparents are safe, he found that his parents are together and after just a few days (2-3 days i think) his parents came to the apartment building with his mother's colleagues. his mother's awaken as someone like some think of leader that could take people under her and make them awaken. and since his father love his wife so much, he awaken under her power and much stronger.
they be staying at the apartment building with the other nurses under his mother and help with rescuing people within/outside the safe zone.
I am soo relieved that they are safe. I wonder if they will join his apartment or will want to stay in their village.