In the software piracy scene, every release is accompanied by an file (the "write-up"). For this specific HOODLUM release, the standard instructions are: Unpack : Extract the .rar file using WinRAR or 7-Zip.
: The .rar extension indicates a WinRAR archive. Within the scene, HOODLUM typically releases games as ISO images packed inside these archives. Common "Write-up" (NFO) Details ONINAKI-HOODLUM.rar
Are you having with the installation, or were you looking for a gameplay guide for Oninaki? In the software piracy scene, every release is