My favorite Korean drama.Absolutely the best in every aspect.It's a must watch for me but careful!You need to have a lot of time as this will make you lose your sleep.Also a box of tissues next to you is adviced as this is an emotional rollercoaster. P.S. If you weren't in love with Lee Jong Suk,this drama is the one that will make you love him no matter what. P.S.2.The female lead is absolutely amazing as well.She's a great actress and plays a relatable and overall great character.It's refreshing to have an interesting female lead that doesn't make you want to rip her heart out.