Honestly I felt the the drama was too long. The frequent timeline changes and the story going in circles at a point, kinda made it boring for me. The ending of the villain felt boring, could have made it a bit better but I guess it was along the lines of a life for a life. The initial episodes were pretty good, the story was enticing, but like with most kdramas, the middle become monotonous. The series could have been wrapped up perfectly in 12 episodes. But the last episode, enduring till the last episode, made everything worth it. It was lovey dovey for sure but it showed what kind of life they both could have lived if it wasn't for the villain. The cute moments stole my heart.
On the characters, I have to say that Taesung was the one who won my heart. I loved his character, it provided the comic relief as well as the seriousness. While Sunjae and Sol were loved by everyone, Taeseung and Bae Inhyuk captured my attention more. Overall, all the actors did an amazing job. Would I rewatch it? No. But if you are thinking about watching it, give it a chance, it's a good story with frustrating, happy and sad moments. But all in all, it was worth it.