The two sisters sought refuge at the estate of the crimson scholars after losing their family due to hunger and disease while living as serfs. their harsh life as slaves made them want a better future in the city. however, the chief maid saw them negatively since they brought trouble with the scholars. she considered them "bugs" for allowing their circumstances to control their lives rather than taking charge of it like humans. when asked to teach them how to become proper humans, they were taken under her guard and worked as assistant maids. through education, big sister maid learned about different social classes in human society while little sister maid became an expert in food and drinks. unlike the other scholars, they did not know the crimson scholars' secret.