While the mod is stable, there are two known issues:
Before we dive into installation, let’s address the elephant in the room: The English dub of Revengeance is fantastic. Michael Beattie’s Raiden is iconic, and "Nanomachines, son!" is legendary. But the Japanese voice cast isn't just a novelty—it is the canonical performance.
The files exist in the game’s code—Konami merely disabled the toggle. The Metal Gear Rising Revengeance Japanese Voice Mod essentially unlocks what was already there.
What (Windows 10, Windows 11, or Steam Deck) are you using?
