Although there were some holes in the story, I liked the approach this writer had to time travel and alternate universes. One of my favorite topics is the theory of multi-universes or parallel universes. I could see where this writer was trying to go, but some of the story wasn't laid out properly or totally thought out. OMG...I wish I could post spoilers, because there are a few things that totally bother me. If you want to know what they are then message me and I will tell you. The biggest theme regarding time travel that I have seen is related to what will happen to your future if you change the past. Not all physicists really believe that parallel universes exist. Even fewer physicists believe that it would ever be possible to contact these parallel universes. But what if they did and what if you could??? Where would you go and what would you do??? What if what you changed didn't matter at all and we will all meet the same fate no matter what choice is made??? The holes in the story are all due to the fact that the writer doesn't know the answers either. I seriously probably ranked this drama too high because I love the subject and it was thought provoking to me. Um...I thought that Gackt was a better actor? That is all I'm going to say. The music was fine. I will never rewatch this. I only really recommend this as a thought provoking tool.