Snakes aren't necessarily known for their courage. As such, Jirou plays an integral part of the Ito's battle plan.
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GCT Studios Previews Jirou For Bushido
Bannermen have a long tradition in warfare. A battle, after all, is rather chaotic. So having a bit of an idea where your guys are can be really handy. The Ito certainly are no strangers to battle. As such, they have their own bannerman, Jirou.
Snakes aren't necessarily known for their courage. As such, Jirou plays an integral part of the Ito's battle plan.
Source
Snakes aren't necessarily known for their courage. As such, Jirou plays an integral part of the Ito's battle plan.
Source