Chapter 391 - Side Chapter: Mutsu Clan Assassin Family

The Mutsu clan is one of the finding clans of Berdonia, they were a family of assassins that worked directly for the Emperor of the Granado Empire. When the Greyhounds convinced the two slave brothers that would later be known as the founder of Berdonia to revolt, the Greyhounds knew that the slaves even with their help wouldn't really be able to do much. So through some secret maneuverings here and there, the Greyhounds were able to get the Mutsus to help.