If you absolutely cannot find the official dub, the next best thing is using AI. Modern text-to-speech engines can now read SRT subtitle files with emotional inflection. While this isn't the original actors' voices, it allows you to generate an English narration track that syncs perfectly with the Korean video.
Kim Soo-hyeon didn’t just want justice; he wanted to transform into the very thing he was hunting. I Saw The Devil English Audio Track Download
When downloading content from online sources, be aware of the following: If you absolutely cannot find the official dub,