Voice Eroid Plus Sex: Yukari Yuzuki

Yuzuki Yukari is a Voiceroid, a piece of software you can use for text-to-speech. In this doujin, she also has a physical body. After the main character uses her for a whole month to voice porn to him, that physical body gets a bit hot and bothered. And when an update adds sex functionality (why did it didn’t come out of the box is anybody’s guess), things are primed to escalate quickly.