Otsuta

…By chance, he was picked by a university professor, Shunzo Sakai, and became his student. Hayase had a mistress, a geisha from Yanagibashi, named Otsuta, and they lived together, but when his former teacher, Sakai, found out about it, they were forced to break up. The Sakai family's only daughter, Taeko, was born to Otsuta's older sister, the geisha Koho. …

*Some of the terminology explanations that mention "Otsuta" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…縁あって大学教授酒井俊蔵にひろわれて書生となる。早瀬には柳橋の芸妓でお蔦という愛人がおり，同棲するが，恩師酒井の知るところとなって別れなければならなくなる。酒井家の一人娘妙子は，お蔦の姉芸妓小芳に生ませた子であった。…

※「お蔦」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報