Hello. I've already watched of more than a hundred series and this one- hi, bye mama is totally not my kind of genre but then, it has its own twist. This drama contains 16 episodes and i must say that the whole drama deserves an applause. Yes, for the acting skills of the leads and the supporting casts. The said drama contains flashbacks so better concentrate in watching the scenes or else you will be in total vagueness. I dare you to be a fun of kim tae hee or else you will not appreciate the story itself. I was just disappointed because there were supporting casts ( as ghosts ) with their own dillema but then left unanswered or lacked of solutions then shift to the story of gwangha and cha yuri together with their daughter soe woo. Well, i will not be prolonging this review of mine so better watch it. I repeat 100% of concentration is needed for you to appreciate the whole story.✌