Thread: Help to find Kotaro Kyokutanryu

I know this manga as Kotaro kyokutanryu in Indonesian publisher...but what the title in Japanese...? Can someone help ?

The only series I know with Kotaro in the title is Kotaro Makaritoru! and its several sequels, none of which have "kyokutanryu" ("extreme dragon"? possibly) in the title. Still, could one of them be it?

(59 + 27 + 9 volumes ongoing between them -- this series has legs ... )