Synopsis: Souryuuden

Four divine Dragon Kings reign over separate kingdoms located in the north, east, south, and west in this tale. Upon being reborn in present times, each sibling possesses supernatural abilities and can transform into a Dragon like their predecessors. Despite preferring an ordinary existence, malevolent creatures emerge and initiate an assault, forcing the siblings to take action. Their primary objective is to vanquish the "Four Sisters", the descendants of the "Bulls" hailing from America, before they utilize their technological and economic supremacy to seize control of the world. Nevertheless, as they commence this conflict, the brothers must evade the "Bulls"' destructive intent while also determining their position in contemporary society.