A modern day novel that includes ninjas, aliens, street gangs and mobsters. A young ninja of the feared Dark Flame Clan, Leopard returned home from Japan, after fulfilling the mission his father gave him, only to find out that another clan, one that was thought to have been killed off a long time ago, had started making itself known in the city. Who are these newbie ninjas called the Mizu clan? And why does one of them has a face that is exactly the same as Leopard's?