Why did GwiJu have to go back to the school fire to save DaHae? Did it change anything in their future? How was the son able to travel back to a time when he wasn't even born yet? How was a 5yo able to save GwiJu from a fire if he had no other superpowers but to bring people back? GwiJu would have had to save Ina and DaHae before being brought to the future but the facade had collapsed on him immediately. I was a little disappointed with the ending. They tried to show too much in one episode.