Kashiwazaki Nenji, commonly referred to by his old shinobi name Okina, is an elder member of the Oniwabanshū. During the Bakumatsu, he commanded the Kyoto Oniwabanshū in their endeavors to keep tabs on the revolutionary mayhem escalating in the city, and when the Edo period ended, Okina spearheaded the transition of the Kyoto headquarters into a safehouse and escape route for his defeated comrades. As a result, he becomes the primary caretaker of Makimachi Misao after Shinomori Aoshi departs for Tokyo.