Shin Gaiden is a manga containing short stories related to Ginga Nagareboshi Gin characters and a continuation of Lonely Ron story from Weed Gaiden. The manga was released in Japan in 2009 and officialy translated and released in Finland in 2012.

 

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Journey of condolence

The story takes place shortly after the events of Ginga Nagareboshi Gin. Gin and his friends are on a journey to find famillies of all the dogs who died in a battle against Akakabuto ans his soldiers. Gin, Chutora and Smith are on their way to Hidaka Reiji's teritory when they find some young, starved dog bodies. Sonn appears a hostile pack led by a young dog named Shin who blames Gin's group for killing his brothers and accuses them of siding with a dog named Sack. Sack and his pack appear right away and Shin backs off. Gin and his friends learn that Shin is a song of Hideka Reiji and his pack is in fack terrorized by an enemy dog Muramasa who killed all the strays and kidnaped the females, holding Shion's mother as hostage. With the help of Sak's pack Akame, Kurotora and John they free the hostages and defeat Muramasa.

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The Three Brothers of Kai

It's a story about Akatora, Chutora and Kurotora's puphood. They are three of five puppies who haven't got adopted, so they got closed in a box and abandoned in a forest. They learn to survive on their own, but one day they are attacked by a marten that is too strong for the puppies. A great dane Ben saves them from from a marten who took Kurotora's eye. He aids them and brings them food, but the vicious matren appears again. He bites off Chutora's ear, but before Ben comes back to save them, the three kai pups manage to kill the enemy by themselves.

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Lonely Ron 2

It's a second story about Ron and Bull who appeared in Weed Gaiden. Bull and Ron eccounter a female puppy who tells them about a villain named Wolf who took over her father's pack. Ron and Bull help to defeat Wolf.