工場が大好きなまなちゃんは工業●校の土木科に通う勉強が大好きな女の子。クラスに女子はまなちゃん一人という変わった環境の中、ひょんなことから性に目覚めてしまい、学校のトイレや教室、保健室、実験室などいたるところでフェラ、SEX、乱交7PなどなどHしまくり！！工場も好きだけどHはもっと大好きですっ！！
Mana-chan loves factory and goes to industrial high school, studying engineering works and loves to study. Mana-chan is in a unique atmosphere where she is the only girl in class. From a sudden small experience she becomes sexually active and starts giving blow jobs, sex and orgies with 7 people in a classroom, bathroom, nurse's office and even the lab!! She loves studying industry but she loves sex even more!!
