Go to a comic book cafe and have sex with an amateur girl in a private room until you're satisfied. (NNPJ-137)

I asked the staff at the comic book cafe to secretly install hidden cameras in the private rooms beforehand. Then I chatted up these amateur girls who missed the last train, took them to the private rooms to have sex, fucked them until they were ecstatic, and then sold the videos to the production company. That's awesome!