1. Makina Is Discovered as a Robot

Eita Akutsu is a gloomy, friendless, and virgin mechanical otaku. Even someone like him has a girl he admires—Makina Agatsuma, the popular and glamorous “gyaru.” One night, as Eita returns to his lonely apartment, he finds none other than Makina crouching in front of his doorway...

2. Makina Is in My Room

Makina Agatsuma is actually an AI robot created to captivate men. She immediately sets her sights on seducing Eita Akutsu to make him her pawn. However, Eita is extremely uncomfortable with anything sexual. On top of that, Makina herself is restricted from accessing sexual content due to limitations in her programming...

4. Makina Gets a Uniform

Eita Akutsu begins living together with Makina Agatsuma to help her maintain a normal life without revealing her true identity. Carefully avoiding the watchful eyes of their landlady, the two head to a park where Eita’s close friend Mamimi is waiting. There, they’ve arranged to receive a hand-me-down school uniform for Makina.

5. Thus, Makina Can No Longer Hide

Having returned to school life, Makina slips on a banana peel and falls. Eita can’t stop worrying that her malfunctioning left leg might fall off at any moment. Seeing his anxious behavior, Mamimi becomes convinced that he must be a dangerous stalker targeting Makina…

6. Thus, Makina Is Taken

Makina, whose mechanical identity must remain a secret, frantically calls Mamimi from her apartment to explain away the commotion caused at school. During the call, she starts making odd sounds due to Eita's ongoing maintenance, but somehow manages to keep her cover until the end. Just as things settle down, a mysterious girl suddenly appears at their apartment...

7. Thus, the Sisters Swap Places

Makina loses her body to her younger sister robot, Mimika. According to Makina, Mimika is an agent-type robot skilled at pretending to be fragile in order to manipulate others emotionally. To track down the now-missing Mimika, Eita proposes a strategy only a true mecha geek could devise.

8. Thus, Makina Becomes a Ghost Story

Shrunken down to a tiny size, Makina finds herself in a tense face-off with a now gigantic Mimika. However, she’s unable to make a move—Eita is being held hostage. Mimika threatens Eita, demanding that he perform maintenance on her. As Eita trembles in fear, Makina reveals a secret plan for a dramatic comeback.

9. Thus, Makina Shares a Kiss

After her dramatic comeback victory, Makina points her weapon at Mimika, intending to destroy her. Eita rushes to stop her, revealing his soft-hearted nature. Sensing this, Mimika cunningly seizes the opportunity and shows her true shrewd self. Moved by her act, Eita ends up agreeing to live together with Mimika. Seeing this, Makina becomes jealous and sulks...

10. Thus, the Weapon Awakens

Eita continues repairing Makina’s fragile left leg, but thanks to Mimika’s suggestion, they visit a riverside embankment that lingers in Makina’s fading memories. Meanwhile, Mamimi, still determined to take down Eita, encounters a new robotic warrior named Alma…

11. Thus, Makina Gets Covered in Burrs

After their riverside visit, Makina and Mimika return home in a panic—their hair is completely covered in burdock burrs! Meanwhile, Mamimi, now armed with Alma, devises a completely outrageous strategy to utterly defeat Eita.

12. Thus, Makina Does a Naughty Workout

As Eita and Makina head to school the next day, Makina, thrilled by the improvements to her left leg, can’t stop smiling. But in gym class, disaster strikes—soft tennis is on the schedule! Eita just wants to keep a low profile, but Mamimi has other plans, setting a devious trap that will drag him right into the spotlight…