"Oda Cinnamon Nobunaga" is a comedic anime series that reimagines the historical figure Oda Nobunaga, a famed Japanese warlord, in a modern-day setting where he and other notable historical figures are reincarnated as dogs. The story begins with Nobunaga's death in 1582, after which he is reborn as a Shiba Inu named Cinnamon in present-day Japan. Retaining his memories and personality, Cinnamon navigates the challenges of his new life as a pet while encountering other reincarnated historical figures, such as Toyotomi Hideyoshi, who becomes a French Bulldog, and Takeda Shingen, who is reborn as a Golden Retriever. These characters, now dogs, continue their rivalries and alliances from their past lives, often leading to humorous and chaotic situations.

The narrative explores the dynamics between these historical figures as they adapt to their canine forms and interact with their human owners. Cinnamon's owner, a young woman named Mitsuko, becomes central to the story as she unknowingly cares for the reincarnated warlord. The series blends historical references with modern-day humor, as the dogs engage in playful antics, compete for dominance, and reflect on their past lives. Each episode typically features self-contained stories that highlight the personalities and quirks of the reincarnated figures, often drawing parallels between their historical actions and their current behaviors as dogs.

The main characters include Cinnamon (Oda Nobunaga), who retains his ambitious and strategic nature; Hideyoshi (Toyotomi Hideyoshi), who is competitive and often clashes with Cinnamon; and Shingen (Takeda Shingen), who is portrayed as a laid-back and carefree dog. Other historical figures, such as Date Masamune, who becomes a Siberian Husky, and Akechi Mitsuhide, who is reincarnated as a Shikoku Inu, also play significant roles, adding depth to the ensemble cast. The series balances its comedic tone with occasional moments of introspection, as the characters reflect on their past lives and the legacies they left behind.

"Oda Cinnamon Nobunaga" uses its unique premise to create a lighthearted and entertaining narrative that appeals to both history enthusiasts and casual viewers. The interplay between the historical context and the modern-day setting provides a fresh perspective on familiar figures, while the focus on their canine lives adds a layer of charm and absurdity to the story. The series maintains a consistent tone of humor and whimsy, making it an accessible and enjoyable watch for a wide audience.