There's Humanoid computers called Ai-Bots (in Japanese they'd be called Love Bots cuz Ai means Love but they're also Artificial Intelligence hence the name.) They're created to be the companions of people are lack the confidence to get a significant other so the CEO of HiTek Industries: Hiroyuki Takashima created these Humanoid computers with two purposes. One being you can have sexual intercourse with them. And the other being you can use them to get information from the internet or whatever. But Aiya is a project that was secretly created by the CEO to test whether creating a weapon using this idea was possible. And of course it however it backfired on him and she ended up escaping out of the lab and going loose in Tokyo. Since the Models were already released by this time, she blended in with the other models so no one could really tell the difference between her and the other Ai-Bots. The only people who knew she was a more powerful, armed model is the ones who helped developed her. A Third Year College student, Yoshito Iwasaki, gets his dreams crushed after finding out his crush is already in a relationship with someone while in the middle of confessing. Finding this out hit him harder than a speeding truck and made him believe he'll just live the rest of his life alone. But one night, the unexpected happens. He sees a girl running from a group of men ann risks his life to save her. However, he finds out this girl, Aiya, is no human and is now being hunted by the ones who're after her.