He has all grey fur with white marks around his muzzle with light blue eyes.
He tries to help those in trouble whenever he can and is loyal to Unsai.
Setsuma has returned to Nagano with other Sanada ninja dogs. Reika and puppies enter to tell them Ou that attacked Monsoon when they agree to help. Sometime later, a flood causes a wounded Ken to be washed into a river and the Ou army go to the location to find and save him. They each keep a watchful eye on the raging river, as Kawasemi dives in to find him. When Akakabuto's Offsprings are dead and with Gin's return he tells them the passing of their friends they all sleep together for the night. When morning comes Setsuma hears Kyoshiro chew Orion out for sending his friends away and then watches the fight by Orion and Kyoshiro even though the kishu lost. He saw Orion crying in tears saying that he stayed behind for the sake of everyone because the Ohu Army needs a true leader. Seeing the young pup's skills Setsuma and the others want to try too but when he takes a swing but he doesn't do the same as Orion. He hears from Orion what he learned in a day took Akame two years to learn as the training continues he becomes impressed with Orion's progressed and gets encouraged to keep training. Then, he hears that Rigel and Rocket have returned but bring a bear cub and charges at it with the others when Kyoshiro goes to attack the cub he becomes astonished that Rigel flipped the kishu over with ease after Rigel explains everything Kawasemi becomes surprised that the bear cub can speak dog and that Sirius wants them to raise Chibi until he becomes an adult. Setsuma watches Rigel and Rocket convince Orion not to kill Chibi. Then, hears Orion talk disrespectfully towards his comrades. When he hears that Orion is trying to protect everyone in Ohu. He also sees Orion pointing his bamboo stick at Kurotora convincing the pup to attack him but is stopped by Jerome and watches in horror as Orion almost attacks the shepherd. He watches Kyoshiro give Orion a beat crying in tears but soon the tears turn into laughter as everyone runs back up the hill.