Starting few episodes were good then story was getting bored as it was too much stretched and uselessly creates the scenes to entangled the audience , I didn't understand that it was about two world or about living once again in the past to correct the error.
Last episodes confused me a lot that gate was separate two worlds but at the end when they crossed the gate they all the time reached in some years where same person but in different character and their professional was different .I think it would be better if they get engaged at the end and she became the queen of his world and they manage to leave in both the world.