No, its not Rooftop Prince, its nothing like it. Don't be fooled by the basic story. The bar for romantic comedies have now been set sky high! The tears shed by both as Boong Do and Hee Jin will resonant with the viewer. One step in sync as the the song says, same sky same place. The ending is perfect for the story and the premise of time-travel. Its a tale of love and a deep relationship! WOW! I may never look at another romantic comedy drama again the same! It will be hard to match or exceed this perfectly well crafted romance. If it turns out to be true that the actors developed felling after filming this, not hard to believe as their emotions as they played their roles was pitch perfect! BRAVO!!! ENCORE!! I wait for this writing team's next project! This truly is a perfect production!