In "Buttobi!! CPU" Episode 1, viewers are introduced to Akira Takaoka, a kind but slightly naïve student who dreams of owning a cutting-edge computer. After saving diligently, Akira heads out to purchase the coveted PC9821 model. However, to his dismay, it's sold out everywhere. His luck changes—or so he thinks—when a mysterious salesman offers him what appears to be the same high-tech device. Excited, Akira brings it home, only to discover he’s acquired something far more unusual: a humanoid bio-computer named Mimi.
Mimi, designed to look and act like a cheerful young woman, is far from the ordinary computer Akira envisioned. She reveals that, in order to stay operational and process her advanced "data," she requires a very unconventional source of energy—Akira's semen. This revelation sparks a comedic, awkward, and risqué relationship between the two as Akira struggles to adapt to Mimi’s quirky needs while learning the intricacies of her design.
The episode sets the stage with its unique mix of sci-fi comedy and risqué humor, combining Mimi’s charming personality with Akira’s baffled reactions to create a lighthearted, playful dynamic. The animation emphasizes the humor and eccentricity of their encounters, setting the tone for this unconventional and provocative series.