Kusakage is very loyal and trustworthy.
Kusakage is the first to discover that there's something wrong when Ryūgen's brother Gennosuke enters their village, because the man has no scent. As Gennosuke attacks Ryūgen, Kusakage tries to protect him, but is smashed to the ground. He is then ordered by Gamu to take out Gama's minions who's attacking outside.
When he sees his master, Ryūgen commit suicide after being stabbed by one of Gama's minions, Kusakage jumps into the flames to try and save his master together with Shiba. Ryūgen saved them both by using his body to shield them.
Kusakage doesn’t appear again until Rando and Gamu has joined the Nobunaga clan. Here he kills of one of the intruding army of imagawa's spies, and join up with his old master, Rando.