When the mysterious man only known as Jirozame recruited followers for his Clan, there didn’t seem to be much those samurai had in common. But soon it became apparent that the Shark samurai were all brilliant killers, if totally devoid of any empathy. Thus the Jirozame quickly gathered a dangerous reputation, which often prevented retribution for their debauched habits.
While these minor clans are not part of Rokugan's canonical Clans, they have been a part of Rokugan's history and have been designed by the team responsible for the fourth edition of Legend of the Five Rings. Their status as canon and use are left up to the GM.