銀牙-流れ星 銀- 真・外伝～名も無き犬の詩～

Tells of the friendship between John and Ref, an Akita Inu, that John met on one of the trips with Hidetoshi to Africa. Note: The author, Takahashi Yoshihiro, dedicated this story to the Finnish fans as a thank you for being invited as a honorable guest to the country in 2011.