Eita Akutsu keeps a quiet admiration for the well‑known Makina Agatsuma, but his shy nature stops him from approaching her publicly. He therefore devotes himself to robotics, dreaming of building a machine that could secure him the prized role of laboratory assistant. One afternoon after school, he discovers an injured Makina lying outside his building, exposing her true identity as a constructed android. He mends her, only to learn that she was engineered to lure and manipulate men for secrets. Yet a fault in her code prevents her from executing this mission correctly. Thankful for his aid, Makina proclaims Eita her new master and resolves to take up residence with him. Though he rejects her advances, she persists in trying to seduce him while his focus remains on dissecting her sophisticated mechanics. Still, Makina"s desires cannot be ignored for long—her schemes grow more daring with each passing day.
