My Name is Sei Shounagon

The time is the Heian era. Kiyohara Nagiko, who is famous as a poet, is married to Norimitsu, the younger brother of Mitsuko Tachibana (the daughter of a late aristocrat). Mitsuko is suspicious of Nagiko's bold and daring words and deeds, though she is beautiful and smart, and begins to investigate her surroundings, but she has a certain secret...