In the snow, naked and alone, he forgot who he is. Bummer...

Nobunaga perishes at Honnouji as in history, and reincarnates in modern-day Japan as a dog named Shinamon (Cinnamon). Along the way, he meets other prominent figures from Japanese history, who have also been reincarnated as dogs.

The story of a young man who fights alone to protect his family in a world where heroes from various dimensions wage war on earth.