I desperately want to give this 20 out of 10 .....It was Great ....Perfection.... Almost !! -:(( In the second half the writers really messed up w/ inconsistencies (read my Semi-Spoiler below...No details). Nonetheless, every moment of this drama is Captivating !!! ---- Great pace... 51 episodes and I want more!!! ---- A good story w/ memorable, well developed characters.... ---- Great acting ....especially Joo Jin-Mo and Ji Chang-Wook ... the great love these 2 men expressed was very palpable !!! ---- Excellent Casting all around .... the actors fit their roles perfectly ..... so many memorable and enjoyable characters .... ---- A perfect balance b/w Romance / Action / Intrigue / Melodrama / Comedy ... ---- Ep 1-22 were Perfection !!! ---- then, starting w/ ep 23 , I felt the writers really let me down ....too many inconsistencies!!! .... If they want a certain outcome in the plot ---->>> then they should have come-up w/ a better way to get there ... Weak, weak, lazy writing ! ... ----->>>> Very disappointed w/ the writers for ruining what could have been a PERFECT DRAMA : Directing.... Acting... Plot... Music... Cast... Costumes....etc.... I rate according to my personal enjoyment not necessarily about objective technical crafting .... BUT .... the disappointment in the 2nd half marred my 'Perfect enjoyment' ...so , I give it a 9/10 .... ********* Semi-Spoiler Alert ----- No Details ----********** ---- the one HUGE Disappointment is the secret person revealed in the last few episodes .... Utterly ridiculous !!! ... A huge flaw that cannot be overlooked like the others..... seems like a patch-up job... a last minute idea/change....Weak! ..... the biggest reason I could not give it a 10! ********** END of Semi-Spoiler *********