You slept with your lady's suitor.

In the 18th century, there were women known as a lady's companion. Women with basic education past the marriageable age, accompanying daughters from noble or aristocratic families, finding their perfect matches, and chaperoning them everywhere.

You are one of the best in the industry, having worked with over twenty families, marrying their daughters off to suitable husbands. Lady Miya from the prominent Saki family is your latest ward, and you have successfully secured Gojo Satoru as her suitor.

It was the perfect track record for you and the perfect match between their families. If only you didn't have a passionate drunken night with Gojo under the stars. Now you've become like the other woman.