Best time travel drama to date as far as I am concerned. I loved how the director transitioned between the two worlds, pristinely done. And even though all the characters had the same names and, in some cases, the same jobs with slightly different life choices, it didn't once get confusing. I enjoyed Yoon Shi Yoon in both worlds but more so as he crossed to the 2nd world, becoming calmer, centered, focused, and more thorough. On the other hand, I pitied drug addict Do Won for his choices; I am sure it wasn't easy living with the stigma of being labeled a son of a murderer. I found myself wondering how long he had been one and what drove him to it, as it didn't seem like he’s always led that kind of life. And liked how the drama seamlessly reveals the little aspects of how the two worlds formed. My guess is the killer may be a woman, but time will tell. I didn't want the episode to end, and I don’t want to wait a week for the next one, but as they say, beggars cannot be choosers.

Train as a drama excited me to no end. I couldn't stop thinking; now, this is how one does a parallel world drama. As they say, genius is making complex ideas look simple, and that’s precisely what the writer, director, and cast of Train gave us. I loved how cleverly transparent the show was in its build-up and delivery. I've enjoyed Yoon Shi Yoon as an actor in all of his roles, but I am beyond impressed at the ease by which he portrayed the dual roles of Do Won -- two similar yet somewhat wholly different and complex characters. Indeed great casting, as I doubt any other actor would’ve fit as perfectly to the role as he did. I am in awe of him. I think what I love most about this drama is how the writer seamlessly created two worlds, which at the core had the same people yet who acted so radically different separated mainly by the choices they made. Highly recommend this short but delightful to watch drama!