Ginga Densetsu Weed
Jirōmaru and his siblings were born in spring in Futago Pass, shortly after the death of Shōgun. As a puppy, Jirōmaru is just as mischievous as his siblings and is prone to biting. He remains in the care of his mother for most of his appearance.
Ginga Densetsu Weed: Orion
After a volcano erupts in Ou, forcing the dogs to flee, Jirōmaru and his family are locked in a mine by Jinemon Kurohabaki until being later released by Daisuke.
Ginga: The Last Wars
A few months have passed since the defeat of Masamune Kurohabaki and Jirōmaru is grown up, but still lacking in fighting experience. When Monsoon attacks Ou, Jirōmaru encourages his father to fight but is escorted away with Reika and his siblings under Gin's orders.
Reika tells the children with her to rest for the night, when she notices a dog coming up the hill towards them. She recognizes him as Nyūdōunsai Sanada and tells him what has happened in Ou.
Ginga Densetsu Noah
- He was called as Ami by fans.