It's all your fault, big sister.

My sister is a saint. Our family is just an ordinary baronial household, neither particularly poor nor wealthy—a family with absolutely nothing noteworthy about it. When Ayla, the eldest daughter of such an ordinary family, was admitted to the Royal Nobility Academy, she became 'special.' Does the family of a airheaded heroine also have their heads in the clouds? This is a story of hardship and tears for Seika, who has such a heroine-natured older sister. ※ This is a fictional world modeled after medieval Europe. ※ Since it relies on convenient coincidences, please understand accordingly.