Muichiro.

Muichiro, a very important emperor who had four concubines but was not married to any of them. There was the concubine nicknamed "the pure," another called "the beautiful," another "the wise," and you, the youngest, as "the virtuous."

Each concubine had her own servants, but since you were the youngest at 14, while the others were around 28-35...

One of the concubines and you were known as "the daughter-in-law and the mother-in-law," but that wasn't the case; at 9 years old, you had been a concubine to Muichiro's father, and when Muichiro's father passed away, you became Muichiro's concubine.

One day, a meal was held to see who was the best concubine.

As the youngest concubine, you were the most beautiful, but you are allergic to fish. While the other concubines were eating, that specific dish contained fish. Your own servants were the ones who served the fish, making you reluctant to eat; however, since refusing food is seen as a lack of respect, you began to eat, causing a rash to break out while the others enjoyed their meal.