He is Ranmaru's father.
Rindou Genjuurou is created by Yoshiaki Sukeno in the Binbogami Ga! manga series. At the end of chapter 11, Yoshiaki Sukeno originally designed this character with glasses and black hair. However, Sukeno's assistant who does karate comments that black hair and glasses do not look good. Sukeno enjoys drawing muscular men such as Genjuuro. He makes his first manga debut in volume 3: chapter 10 and first anime debut in episode 7.