A: Possibly. Some game mod managers (like Mod Organizer 2) or backup software (DSynchronize) generate similar filenames. Check the file’s creation date and origin folder.
A: Yes. Unless you are actively investigating or have explicit reason to keep it (ownership, preservation), deletion is the safest option. File- RJ383251-Arisa-Grimoire.7z ...
extension indicates a compressed archive created with 7-Zip. You will need a utility like or WinRAR to extract the game files. Availability The game is available for purchase on platforms like and DLsite. Alisa's Grimoire - OTAKU Plan A: Possibly