Approx 11 mins each episode of 12 episodes.
So every episodes had a kiss and understanding different types of emotions like jealousy,hatred ,angry ,sad ,happiness and so on . So in each episode Goblin experience one emotion through kissing a woman . So when he did this he got into trouble or misunderstanding so female lead help him to complete his task as he was very kind and help her in some ways . As time passes she liked her and then he liked her when he experienced all type of emotion. Personally not liked drama much .