The series, produced by studios such as AMORZ and MUGEN Entertainment , was designed to showcase popular Japanese models in high-definition (HD) and Blu-ray formats, which was still a relatively premium offering in 2009.
The phrase " Egals Vol. 3 Gals Glamourous Risa Murakami.avi.19
Possibly a typo for .001 or .19 as part of a multi-part RAR set. Article angle: “How to recover misnamed split video archives.”