Hitoshi Kobe is your below-average high school nerd, but, he's a genius with computers. He stumbles through his pathetic life without school smarts or the ability to get girls, but he still has one haven left: the AI's (artificial intelligences) he's been creating.

One day, while he is working on AI number 30, a freak accident happens when lightning causes an electrical surge in his computer. Somehow, Number 30 comes to life and becomes a part of Hitoshi's everyday life. Number 30, Saati, changes Hitoshi's life forever, as she is such an advanced AI that she is indistinguishable from a human. Now he lives his days surrounded by girls and has "fun" like never before. Add in the domineering number 20 and badly programmed, gender-changing number 40 and Hitoshi has more girls than he can handle.