This drama is great! omg i can't explain my feels for it! it is definitely one of my favourite dramas of all time, no doubts about it. Every minute was worth watching! There were so many twists and turns and action, not a single moment seemed dull or boring. I love how the story developed from their childhood to their teenage years and then their adulthood. The time lapse were shown really well especially with the different hairstyles it actually felt like it's been years that past. This drama really has everything in from action to romance to friendship to a bit of suspense and mystery. This is truly one drama everyone should watch. One thing it did lack though was the romance, even though there was some hints and elements there it wasn't much, then again this was mainly focused on the corruption of the powerful ones so i guess it is alright! Thought the couples i wanted didn't end up together i was still happy with the outcome. All the cast members were amazing. It felt like they were actually their characters. I don't think anyone's acting was bad or not well portrayed. Everyone did a great job portraying their characters to their best. I also loved how the child actors of Dong Soo and Yeo Woon looked sooo much like their older versions, really the detail and similarity of it was tremendous, it looked real. I love Ji Chang Wook as Baek Dong Soo, he showed how Dong Soo matured throughout the years, the changes he went through were really clear cut. Yoo Seung Ho as Yeo Woon was just perfect! Seung Ho portrayed his character so well, it was amazing, maintaining that sad/mysterious look throughout the drama was just wow, hats off, also that hairstyle totally suited him. Yoon So Yi as Jin Joo was really great, i loved her strong independent women and tomboy personality! Shin Hyun Bin as Ji Seon was also really good, I really loved her look, she looked soo pretty! And also her character developed too in terms of strength and confidence. The music, what can i say about it, i love the OST's. I think this is one drama where i loved EVERY single song, there is not a single song that i did not love! I think every song suited the drama till the end, whenever there was a scene where the songs were playing at the background, it fitted in real well, especially during the fighting scenes and the more dramatic scenes! Just perfect! I would really rewatch this drama as i don't think i would get tired of seeing them, though i think i would only watch till episode 28 because i don't think i would be able to handle the last episode again, because of all the feels i went through lol Overall this drama is just perfect! Not a single detail was lacking, and it wasn't a rushed drama! You can tell that the writers and director took time and care for when they were making this drama. It's just too flawless!! 10/10