As a release from a Japanese software portal, the contents likely require a Windows-based environment with specific locale settings.
The extraction software (WinRAR or 7-Zip) utilizes a cyclic redundancy check (CRC) to verify that no data was corrupted during the transfer of individual segments. 3.2 Executable Environment [Ryuugames] RY-v24825.part1.rar
The presence of .part1.rar indicates that the software is split into multiple segments. To successfully reconstruct the original directory: As a release from a Japanese software portal,