If you're looking for manga similar to Koe de Oshigoto!, you might like these titles.
Follows the story of Rinko Ikeuchi, the daughter of wealthy parents who's on the fast track to enter medical school, but when her family falls on hard times Rinko is forced to take a job, any job, to make ends meet. When the handsome Sawakura shows up offering Rinko gainful employment she can't really say no, even after she realizes that it involves working as a production assistant in the world of hardcore adult videos.
Sarah Goujima is a full-time porn actress. You name it, she's done it - she's covered every fetish both legal and illegal, and the people she's made love to could easily fill a football stadium to the brim. She's lewd, crude, and will bang any dude.
Yugure Yuhi and Utatane Yasumi, two high school voice actresses who just happened to attend the same school and coincidentally got placed into the same class, are the two hosts of a radio weekly program. As fellow classmates and voice actresses, they show all the listeners their great friendship! At least, on the surface. In reality, the quiet girl Chika and the gyaru Yumiko are complete opposites. And they absolutely cannot stand each other. Off air, chaos and insults erupt. On air, they're the best of friends. Just where will this tumultuous relationship lead them?
A 26-year-old salaryman, Matsumaru Fumihiko, asked Miss Tanaka from his work to watch a movie with him, but she didn't show up at the movie theater. As he is about to throw away the ticket, a 20-year-old, rookie voice actress named Onda Aka asked for the ticket. The two of them end up watching the movie together. On their way home they notice that they live near each other. That night, Aka's apartment burns down and Matsumaru offers his help. She ends up living with him, but they have to keep it a secret to keep their jobs. What will happen to this relationship that is more than friends but less than lovers?
Illustrator, Sumire (pen name Ichigo) at BL game’s company, reunites with his high school classmate, Kai. Kai became a popular rising voice actor. Sumire start to be conscious of Kai’s acting in recording the love scene. Since that day, he can’t get it out “That voice” of Kai from his head… what…what!!! An erection!!? And a love story that unfolds on the scene of a little indecent “BL Games”.