Kusuriya no Hitorigoto Episode 21 English Subbed Episode Title: How to Buy Out a Contract Episode Description: Maomao personally takes charge of cleaning up the rear palace pharmacy to make sure it will not be sabotaged, after the doctor in charge of the inner court pharmacy was punished with a pay cut for mismanaging it. The rear palace doctor reveals that his family is the official purveyor of paper to the palace, but ever since the empress dowager banned the cutting of trees, their business went downward as their new formulation resulted in a poor quality paper. The doctor became an eunuch to avoid a second sister coming to the rear palace as a consequence, their family at risk of losing purveyor status...