The date embedded in the file——places it at the height of the "Golden Age" of Japanese P2P networking. During this time, platforms like Winny and Share were the primary methods for fans outside of Japan (and tech-savvy residents within) to consume Japanese media.
Unlike a physical VHS tape which might degrade but remains, an .avi file with a non-descriptive name can vanish entirely if not properly archived. As of 2025, no known copy exists on public trackers or streaming services. It has become a phantom—discussed in old forum threads but never seen. -SOD--OPEN-604- ----- 500 SEX 2006-05-04.avi
You can search the code "OPEN-604" on sites like the Internet Adult Film Database (IAFD) or the AV Entertainment database to find the cast, director, and official runtime. The date embedded in the file——places it at