I think it only draggs a little bit towards the end, but honestly, you don't get bored with it! I was thinking the same when I first started it, but I end up binge watching the whole thing! The first episodes are more about the brothers' life during their childhood and you'll get through an emotional rollercoaster while watching the struggles they have to go through from a young age. Afterwards, they move towards the present day and they show how the brothers have fallen apart after the oldest one went to prison, and the whole drama is basically about how they try to reconnect and forgive each other, while moving on with their lives and finding some little happiness in their partners. And there's always a dark theme going on in the background which makes the story very intriguing! And honestly, the main couple is probably one of my favorite ones... their scenes together are so sweet and fun to watch! And I loved how the drama touched on some heavy, emotional stuff! You should watch it even if it takes time!