OVA
Description
Oyaji-dono is the patriarch of the Arakawa family and the father of the series narrator, Hiromu Arakawa. He is the third-generation head of a farming household whose ancestors came to Hokkaido from Honshu during the Meiji era as pioneer settlers, and he runs the family's dairy and crop farm. In the visual style of the series, in which the family members appear as bovine humanoids, he is depicted as a rugged, bull-like figure with weathered features, often wearing a scarf.

His personality is casual, unpredictable, and strikingly eccentric. He frequently behaves in ways that astonish even his own children, and his unconventional logic leads him to repurpose farm equipment and facilities for unorthodox purposes. He is defined by extreme physical resilience and a disregard for ordinary caution, so stories of his life-threatening accidents and reckless improvisations are a major source of humor. His motivations center on hard work, self-sufficiency, and the practical operation of the farm. He embodies an old-school farming ethic captured by the household creed that those who do not work shall not eat, and he applies the same standard to his children, once stating that because they are human like him, anything he can do, they can also do.

In the story, Oyaji-dono functions as the head of Arakawa Farm and the subject of countless legendary anecdotes. These include surviving a childhood kick from a workhorse that shattered his jaw, falling from the roof of a barn he was building, breaking ribs while repairing machinery, and suffering ruptured internal organs after a dump truck accident, an incident he greets by cheerfully noting that he lost thirty centimeters of intestine. The most famous episode is his account of driving a light truck up an embankment and leaping across a swollen river after finding the bridge had collapsed, a story that leads his daughter to declare that someone should take him to Hollywood. In other episodes he floods a field with a vacuum truck to create a skating rink and drives a tractor through a river to chase fish toward his fishing children.

His key relationships are with his wife, referred to as Okan, and with his children, especially his daughter Hiromu. Okan acts as a stabilizing presence and a dry commentator on his behavior, and she observes that whenever he nearly dies, a cow or pet on the farm dies for no clear reason, a running gag about livestock serving as his substitutes. Hiromu regards him with a mixture of exasperation and respect; she presents his recklessness comically but also acknowledges his toughness and work ethic, concluding that she could never surpass him even in her next life.

Over the course of the series, Oyaji-dono shows a subtle development tied to aging. He was once known for walking to the winter barn in nothing but underwear even in temperatures around minus twenty degrees, but in his later years he concedes that such behavior is unwise at his age and begins dressing more sensibly, though he still appears in a bare-chested jacket over his underwear. His notable abilities include extraordinary durability, an apparent talent for surviving accidents that would normally be fatal, and a gift for using and adapting agricultural machinery in inventive ways to carry out his unconventional plans.