Love Blooms Out on the Murasakino

Asuka Period, Japan. Ooama no Miko meets Nukata no Ookimi when he goes with his older brother (Nakano Ooe no Miko) to her house. There Nakano Ooe is wooing Nukata's older sister, and so the two younger siblings meet and fall in love. Five years later, Ooama and Nukata are married, and a daughter has just been born.