Ninku is based on the original story of Koji Kiriyama ( Weekly Shonen Jump ) ; And the story goes ... During the Civil War a group of soldier the ninku clan which is consist of 12 groups each group has a different fighting techniques.. they battled the empire army for peace in the land , but before they win the war, they were re-group and never seen again ..

Well actually the story is focused on the 3 etonin captain's ; Fusuke, Aicho, Toji together with Rihoko (toji sis.) and Hiruyuki (wired penguin) , together they travel to find the sky dragon to help them become stronger ... to save fusuke 's mother (yamaguki) who is being imprisoned by Kojin . Arch-bishop Kojin is the big boss of the empire army ; and has 3 col ;Basara ( former ninku-Gumi captain) , Makira, Ajirata. Their order is to exterminate all the ninku soldiers.

Also , Col Basara ( Kisumi ) has a major part in the story , he is the best friend of the 3 etonin captain; Fusuke, Aicho, Toji. Kisumi joined the empire army because he lost hope when his gf died (miyuki) .. so he had frozen his own heart. come to think of it its like Kurei in flame of recca .... u know SCARLETT, her gf was also killed ...

The thing i like in this series is their plane, the hindenburg ,, the plane that toji loves... badly , it always being broke into pieces hah ! hah! and a penguin who runs fast ?!? and strong ?!? kinda wired huh ?!?