Ginga Nagareboshi Gin Shin Gaiden: Namonaki Inu no Uta
銀牙-流れ星 銀- 真・外伝～名も無き犬の詩～
A story details the bond between John and Ref, an Akita Inu John encountered during a journey to Africa with Hidetoshi. The author, Takahashi Yoshihiro, created this tale as a tribute to Finnish fans, acknowledging his invitation to the country as an honored guest in 2011.
