As the dram name says w:two world it's really through me in another world like literally its one of my favourite drama as i was in lee jong suk marathon so i also watched this drama and after this drama i fall in love with him in more depth his acting is amazing in this drama as always but what made me attached to this drama is it's suspensive content and the chemestry between leads. You can't predict what will happen in next episode it's just 16 episode drama which will show you from many ups and down but always satisfactory