Gloomy robot enthusiast Akutsu Eita has a massive crush on his school’s idol, Agatsuma Makina, convinced that someone as cute and popular as she would ever notice him. But when Makina unexpectedly shows up at his door, things take an even stranger turn! It turns out, Makina is not just a popular girl—she’s a robot designed for pleasure, and she needs Eita’s help.

Thrilled at the chance to get a closer look at Makina’s parts, Eita braces himself for her to reveal it all, including her robotic interior. However, his lack of experience quickly overwhelms him. Is this a dream come true for a mecha-nerd like Eita, or will the pressure of keeping Makina’s secret be too much for him to handle?