Ensapo JK ~Kuro Gyaru Bitch no Pichiman ni Tairyoushasei~

Salaried worker Yoshio Imai was a salaryman in a deadend job.
He busted his butt every day, came home to nothing, no hobbies, no girlfriend.
Then his company sent him "on business" to another office.
It was a discrete form of demotion, but it came with a travel stipend.
Living in a hotel and feeling strangely liberated, he decided to try an escort...

[From DLsite English]