Poison and Medicine are two sides of the same coin. The only thing that differentiates them is the amount given, this is true as a maidservant of the flowery inner palace. This is especially true for the role of taste tester. Daiyu is born as an orphan but taken in by an herbalist in the Red Light District. She had planned to keep a low profile till the end of her contract, but due to her curiosity and honesty landed her in the intricacies of the inner palace.