Azuma is saved by his childhood friend, Kogane Asabuki, thanks to a living weapon she wields on her right hand, known as a Bubuki.
Learning about these weapons, Azuma becomes a Bubuki wielder himself and sets out on a journey.
An early look at preview material has revealed that the second season of BBK/BRNK is scheduled for fall 2016 with the subtitle Hoshi no Kyojin (Star Of the Giants).