Mana-chan, who loves factories, is a girl who loves studying and goes to the civil engineering department of an industrial school. In a strange environment where Mana-chan is the only girl in the class, she suddenly wakes up to sexuality, and everywhere in the school's toilets, classrooms, health rooms, laboratories, etc., blowjobs, SEX, orgy 7P, etc. H! ! I love factories, but I love H even more! !
