The series featured real adult video idols Nanami Kawakami and Mami Aizawa. This marked a turning point in Japanese drama, as it was the first time AV idols appeared alongside A-list actors. In the past, A-list actors and AV idols never appeared together in the same drama or TV series.
In reality, uncensored adult videos are still illegal in Japan. Many film companies circumvented the law by registering companies overseas, but police still ban them.
The real Sapphire Production Studios are located in Kabukicho, Shinjuku, Tokyo. It is famous as a notorious red-light district and continues to be one today.
Reportedly, even after the cameras were shut off and put away, the performers and crew still wanted to have sex with each other and did not view the activity as "work."
It was adapted from Nobuhiro Motohashi's novel "Zenra Kantoku Muranishi Toru Den" (published by Ohta Publishing on October 18, 2016). The novel is based on the true story of AV director Toru Muranishi.