I'm three years late to this drama but I watched it in three days and despite its flaws, loved it. I loved so many characters, I laughed out loud so many times, and the OST is amazing.

I hadn't seen a drama with Song Joong Ki before, but he played the charming and brave Yoo Shi Jin so perfectly. I am officially a huge fan of him now. The friendship between Yoo Shi Jin and Seo Dae Yeong is so precious and funny and I wish they had more scenes together. For the romance in this drama, I am not a big fan of Song Hye Kyo and I didn't care for her character Dr. Kang Mo Yeon. I only rooted for her and Yoo Shi Jin because I loved the latter so much. BUT I did adore Kim Ji Won as Yoon Myung Ju and I was constantly waiting for more scenes with her and Seo Dae Yeong.

For both of the romance storylines, the story was pretty repetitive and the drama only feels so fast-paced because of all the action. It was sometimes too fast-paced with one disaster following another way too quickly and then being resolved just as quickly. It's unfortunate that many of Yoon Myung Ju and Seo Dae Yeong's most interesting moments were in the flashbacks but I am grateful for those. There are definitely moments that seemed so unrealistic, especially in some of the medical scenes.

The supporting cast was pretty strong. I loved Private Kim Gi Bum and Dr. Kang Mo Yeon's Urk team. I'm a fan of SHINee and I was impressed by Onew's performance as well as the depth of his character's storyline. Dr. Song and Ha Ja Ae were so cute.

The ending was super bizarre though and the last story arc felt so rushed so that was disappointing, but there are still enough moments that I loved for this to leave a good impression on me.