Outbreak Company: Moeru Shinryakusha

The year is 20XX, and Shinichi Kanou is a pretty typical otaku: he loves anime, manga, games, and light novels, but his devotion to the two-dimensional hasn't always made him the most popular guy around. What he doesn't know is that Japan has discovered a portal to another world in the vicinity of Mount Fuji. The people of the Eldant Empire, though, only have eyes for one of Japan's traditional exports: pop culture. Enter Amutech, a purveyor of "general entertainment" that's secretly run by the Japanese government. Shinichi lands a job as the company's general manager. Now he finally has a chance to put his nerd know-how to good use spreading the otaku gospel in the Eldant Empire. And wait... he has to work with a half-elf maid, an empress, AND a female soldier to get the job done?

(Source: J-Novel Club)