I don’t even know where to start from. I believe the cast is what gives justice to this drama more than anything else. I fell in love with Ryeoun, although I've watched him in Adult Trainee I freaking DID NOT RECOGNIZE HIM. The story is a little confusing when it comes to time traveling because it leaves some unanswerable questions, like what happens to the present until Eun Gyeol comes back? How did everything change and how did this affect the others? I have many questions, plus the ending seemed a little rushed. I would LOVE a scene where Yi Chan recognized Eun Gyeol as his past friend. Of course there would be some flaws but I think the drama is very close to being perfect. Seorina, Choi Hyun Wook and Eun Soo were soooo good, this genre gives justice to Hyun Wook's acting. The best part is the sign language and deaf people recognition, I think many people got interested in learning sign language after watching TW, including myself. I hope we see more dramas like this in the future ☺️