Makino hopes to pass her days quietly-- without drawing any attention to herself-- but one day, she stands up to Domyoji in defense of her friend. The next day, Makino gets the dreaded red notice. Even though she is harassed, Makino decides to keep going to school because she is a "tough weed". She declares war right back on the F4. Her resolve gets the attention of her crush Hanazawa Rui and oddly enough, rouses romantic feelings in her worst enemy, Domyoji Tsukasa.
Heita Fukai is an ordinary, but timid, high school student who has no interest in love. This all changes when a new transferee student arrives at his school. Heita discovers that the girl is actually a robot named Q10. The duo starts to cause trouble in school, while Heita starts to fall in love with the robot. This is how their story begins ...
One day Heita Fukai finds a girl sleeping in the science lab. When Heita touches her, she suddenly wakes up and opens her eyes. The girl was actually brought to the lab by the school's principal Jiro Kishimoto. The previous night, principal Jiro Kishimoto, after a night of drinking alcohol, discovered the girl in the garbage. The drunk principal takes her to his home.
The next morning the principal notices that the girl doesn't breathe at all and he asks for help from Heita's homeroom teacher Tatsune Ogawa. Tatsune Ogawa recommends that they should hide the girl in the science lab. When they get there, they find Doctor of Engineering Kuriko Yanagi in the lab. Kuriko notices that the girl is actually a robot with human looks. A secret does exist within her.
The principal is afraid of a scandal and proposes a solution. They should keep this a secret and under the situation, Heita becomes the caretaker for the robot; not realizing that he has totally fallen in love with her...