Sacchan no Ie wa Fashion Health

The dark-haired otome's home is actual a brothel!?

Satsuki was beloved by her friends in archery club.
They were going to go to state championship, but one day
her parents simply up and vanished.

Her parents left a certain family business behind,
and Satsuki was named the inheritor and company director.
She was asked by the employees to take charge,
which she did between school and study.

Except the business... was not strictly legal...

This is the story of Satsuki, an earnest schoolgirl,
who becomes the proprietress of the family brothel
along with a veteran prostitute.

[From DLsite English]