TV-Series
Description
In the anime Oda Cinnamon Nobunaga, Ota Gyūichi appears as the devoted record keeper who served Oda Nobunaga during the Sengoku period and is identified as the author of the chronicle of Nobunaga's life known as the Shinchō Kōki. His background is rooted in his historical role as Nobunaga's scribe, but the series presents him primarily as a figure of comic exaggeration. Because he idolized his lord to an excessive degree, his written accounts are implied to have inflated or embellished Nobunaga's deeds. Nobunaga himself reinforces this idea when, after being reincarnated as a dog, he dismisses accusations of past atrocities such as the massacre at Mount Hiei by blaming the overzealous records of his scribe.

In the present day of the story, Gyūichi is reincarnated in the same era as Nobunaga and the other former warlords, but his first modern form is not a dog. He is reborn as a cow on the Ota ranch, where he is killed, and his meat eventually ends up as the meal shared by Nobunaga and the other reincarnated lords at the dog park. When his spirit appears before them and reveals that he had come back as the very cow they are eating, Nobunaga refuses to accept the claim and continues eating, which causes Gyūichi's spirit to disappear in defeat.

His defining motivation is an intense, almost overwhelming desire to remain close to his former master. Nobunaga describes him as something of a stalker in their previous life together, and the series plays on the idea that Gyūichi cares for his lord far more than his lord cares for him. Despite reincarnating in the same time period, he struggles to get Nobunaga to recognize him, and his stubborn determination to stay by his lord's side no matter what becomes his primary comedic trait.

His role in the story is that of a recurring gag character built around blind loyalty, inflated record keeping, and unreciprocated devotion. His notable ability, his skill as a scribe and chronicler, is used less for reliable documentation and more as a source of humorous distortion, as his love for his master supposedly colored everything he wrote. The character does not undergo significant development in the anime; his portrayal remains consistent as a loyal, persistent, and slightly pathetic figure whose earnest devotion is never quite acknowledged by the person it is directed at.