Honestly the show seems to be one of those shows where the worst aspect is the writing and lack of story telling. It seems like it will be a decent plot until you realize that by episode 11, all of the characters but 1 has any type of intelligence. Honestly this show could have been a better show if they stick to: travel back in time, switch places, destroy the evil. But unfortunately since the writers seem to not know how to write character and the evil bone is just a plot device that is mute, the man draw are the people, but none of the characters are written in a way to be like able. If they didn't add in the part of ice toothpicks, and wrote better dialogue. The actors honestly were not paid enough because when they don't have dialogue and just acting out a scene they feel as if they could really have feelings for each other, even if the male lead isn't supposed to have emotions he still shows enough interest that you can believe he at least like the female lead like a person can like their favorite celebrity, genuine interest. While the female lead is all over the place writing wise. Honestly the fact she was given instructions to end the male lead was the biggest mistake, it should have been that there was another way and the ice was for final straw of was to be murder before defeating the evil bone. Honestly I would say I would love to see it longer but honestly I am glad it's only 40 episodes. None of these characters are worth even thinking the world should be saved. I'm more curious to see what would happen after the world is destroyed, what does the bad guy do after does he die also or does he try to restore it in his own image and what would that world look like? I honestly would love to see it but the writer of this show deserves to never try again until they get better at writing dialogue and characters.