(Direct Audio Visual Software), and "366" is the specific release number. .part02.rar
: Use a utility that supports multi-part RAR archives: Windows : WinRAR (native) or 7-Zip (free). macOS : The Unarchiver or Keka . DASS-366-u.part02.rar
The filename refers to the second part of a split compressed archive containing the Japanese adult video (JAV) titled "派遣マッサージ師にきわどい秘部を触られすぎて取られました。" (English: "I had my delicate parts touched so much by a dispatched masseur that I lost it"), starring Yumino Rimu (弓乃りむ). (Direct Audio Visual Software), and "366" is the
RAR is a proprietary archive format that supports "spanning," which allows a single large file to be broken into a sequence of smaller files. (Direct Audio Visual Software)