Koe de Oshigoto! The Animation

On her sixteenth birthday, Kanna Aoyagi finally learns what her older sister Yayoi does for a living: she produces adult games. Even worse for a girl who can barely say anything remotely suggestive without turning red, Yayoi wants Kanna to provide a character's voice for her newest project.

Kanna enters the recording booth reluctantly and begins learning breath control, expression, timing, and how to perform without dying of embarrassment. At the same time, she has to hide the job from her school friends and deal with increasingly awkward recording demands. The biggest challenge is not the script itself but overcoming enough of her own shyness to convincingly become someone completely unlike her.