If you are looking for the complete experience rather than the 51-minute clip: Search for the base ID . Look for the official Das! studio release.
: Because titles are often in foreign languages, the production code is the most reliable way to find the exact film. DASD-620 ENGSUB02-00-51 Min
None of these have a runtime of 51 minutes. JAV feature length is typically 110–130 minutes. If you are looking for the complete experience