Really emotional tv series. Loved Yeon Ho's character development. I felt Choi Jin Hyuk always got angry too easily though but I really loved his acting. One thing I don't understand though, was the placement of the fountain pen. If Park Kwang Ho left the pen in the past (just after travelling back freshly after the fight with Mok Jin Woo) but Yeon Ho was able to find it in the teddy bear, I don't really understand the concept of how the timing worked. Also, who are the people that Jung Ho Young actually kill? I got lost eventually.