There's also the possibility of the file having a hidden meaning or being part of a puzzle in a game. Perhaps the binary data contains encrypted information or a message in Japanese that the protagonist needs to decipher to progress in the story.
The existence of files like fg-selective-japanese-vo.bin highlights a major trend in digital preservation and data management. As modern games balloon to over 100GB, the ability to strip away unused languages is vital for users with metered internet connections or limited SSD space. It allows the community to share and store massive titles more efficiently without sacrificing the "Full" experience for those who want it. fg-selective-japanese-vo.bin