-Both dramas feature a male lead who is a slave to the female lead.
-Both dramas feature male lead with Amnesia and hidden past. In Colourful bone, the male lead turns out to be the prince who disappeared when he was young and presumed dead. While in An Oriental Odyssey the male lead turns out to be a prince of another kingdom.
-Both dramas feature a love triangle where people say that the male lead is not good enough for the female lead due to his low status.