Nihon Ethics of Video Association
| 日本ビデオ倫理協会 | |
| Pronunciation | 
 | 
|---|---|
| Successor | Ethics Organization of Video | 
| Formation | February 1972 | 
| Dissolved | November 2010 | 
| Type | self-regulatory | 
| Purpose | Ensuring adult videos adhere to Japanese obscenity laws | 
| Headquarters | Chūō, Tokyo, Japan | 
| Location | 
 | 
| Area served  | Japan | 
| Website | viderin.jp | 
The Nihon Ethics of Video Association (NEVA) (日本ビデオ倫理協会, Nippon Bideo Rinri Kyōkai; "Japan Video Morality Association"), usually abbreviated as Viderin (official) or Biderin (both: ビデ倫), was a Japanese video rating organization. It was a voluntary organization to ensure adherence to Japanese obscenity laws, which prohibit any display of genitals. This is accomplished by a mosaic pixelation that is applied to videos for sale in Japan, and the NEVA seal is placed on all videos produced by member studios, which included the larger and older adult video studios in Japan—including h.m.p., Kuki Inc., and Alice Japan, which belonged to NEVA.