Jinshi (壬氏ジンシ, Jinshi) is the deuteragonist of The Apothecary Diaries series. He appears to be a beautiful eunuch who was placed in charge of the Inner Court and often requests for Maomao to solve mysteries in the palace in exchange for rare medicines. He finds her apathy towards him refreshing and amusing. Later, his childish curiosity evolves into a romantic affection.