Idol actor：Updating
Director：Kawajiri
Categories：Petite,Exclusive,Censored
Area：Japan
Year：2011
Introduction：A group of innocent students come to visit a local factory on a field trip. Curious about the machines she is seeing up close for the first time, a girl gets separated from the rest of the group. The oil-covered workers secretly play naughty pranks on this innocent girl. Her cries for help are drowned out by the sounds of the machines running, and an adult extracurricular lesson begins in the blind spot of the large machine...