Koe de Oshigoto!

Unless you're Kanna Aoyagi, being invited to work as a voice actress for a video game studio would not be all that horrible. On her 16th birthday, Yayoi, her older sister, coerces Kanna into providing voiceover services for her at Blue March, a video game studio that specializes in eroge—sexually explicit erotic games. Kanna, who is kind and innocent, is baffled as to how she might ever succeed in such a job without any sexual experience. But as she employs her creative imagination, plays eroge for study, and gets unconventional assistance from her coworkers, Kanna gradually grows accustomed to her new, embarrassing job.