[quote name='Achilles00']Does that mean it's a bootleg?[/QUOTE]
No. Region protection just means it can only be played by certain devices that output certain amounts of various things. With it being region free, it means that it's the Korean version, but it will still play on US XBox 360's. The extra information also say that there's english voices and text, so there's no worries about importing it.
in short, it's a hell of a deal and you should jump on it.