The Secret Life of Lady Nijo by Toazu Gatari

Toazu gatari certainly seems to suggest that he knew about lady nijo's extra curricular activities, so to speak. One of the funnier bits of the narrative involves a visit by occebono slash sionge sane cane that runs late into the dawn. After that first kid, she would not have any more children with the retired emperor go fuca cusa himself. She ended up being forced to leave the city in 12 85, when she was only 27.