Production quality, acting, script is all top notch! This is such a beautiful story and they did not only focus on giving the main characters purpose and reason, they also took their time to shape the side characters. It felt so real. Although the time travel concept is nothing new, they did use their own twists and overlapping tricks which made it all look more well-rounded.
I was confused at the ending. But since I found out there will be a second season, I will give it the benefit of the doubt that this is just part of the bigger picture, since the rest of the show was so well thought-out. The only reason I didn't give it a full 10, is because I generally don't enjoy dramas as much in the time he travelled to. I am looking forward to the second season and I can only recommend this show to anyone interested in a heartfelt Bl romance.