Premieres October 2024. Check out the Crunchyroll article for additional information. Synopsis from AniList:
The story is set in Japan’s Warring States period. It follows Tono, a man who was once a fearful god on the battlefield but has fallen into poverty and is now living in a tenement house, and a dog that he picks up despite his inadequate daily life. Tono is pushed around by the dog, who does not listen to him and spends its time freely and unrestrainedly.
Some quick searching makes me think it is unlikely, but technically possible. The AKC says that the breed originated back in the 10th century in Wales. The warring states period of Japan is the 15th and 16th century. However, corgis were primarily used for cattle herding at the time, so I don’t really think it likely they would have been imported and used in Japan.
They are very cute though, so it makes for a fun premise.
I love me some corgis, it just seemed like a weird choice for a arring states era Japanese setting