It's spring break, and Seika returns home from the academy for the first time in a while. At his family's request, he brings along Amyu and his other friends.
When he arrives home, he finds his older brother Gly and Fiona, the Holy Princess, waiting for him. Possessing both otherworldly beauty and a mysterious power, Fiona seems to take an interest in Seika. Unfortunately for him, catching the eye of one of the most influential people in the empire isn't a good thing when he's trying to lie low. Now he must carefully navigate this relationship.