Kakushite! Makina-san!!

Eita is a high school student who enjoys mecha and keeps to himself. He develops feelings for Makina, a well-liked girl at school. One day, Makina unexpectedly appears at his home and discloses that she is a robot built for pleasure, known as a "sexaroid." She asks Eita to fix her without drawing attention. Despite his discomfort, he agrees. Makina attempts to act on her attraction to him, making it difficult for Eita to manage his emotions and keep her identity a secret.