Yoshihiro Tatsumi was a Japanese manga artist and a seminal figure in the history of the medium, widely credited as the pioneer of the gekiga movement. He was born on June 10, 1935, in Osaka, Japan, and died on March 7, 2015, in Tokyo. His career spanned over six decades, beginning when he was first published as a teenager, and his work fundamentally challenged and expanded the possibilities of manga as an art form.

Tatsumi is best known as the originator of gekiga, a Japanese term for "dramatic pictures" which he is said to have coined in 1957. He developed this style as a direct reaction against the dominant, whimsical, child-oriented manga of the post-war era, particularly the work of Osamu Tezuka, whom he had met and admired as a young artist. Tatsumi aspired to create an "anti-manga manga," one that was darker, more realistic, and aimed at an adult audience, exploring the psychological distress and social struggles of ordinary people in a rapidly changing Japan. He, along with a group of like-minded artists, formed the Gekiga Kōbō studio in 1959 to promote their mission.

His notable original works are numerous and have been widely collected and translated, particularly in the 2000s. Among his most significant creations are Black Blizzard (1956), an early full-length story; the short story collections The Push Man and Other Stories (1969), Abandon the Old in Tokyo (1970), and Good-Bye (1971-1972); and his magnum opus, A Drifting Life (2008). A Drifting Life is a sprawling, 855-page fictionalized autobiography that chronicles his life and the early days of the manga industry from 1945 to 1960. He also adapted classic rakugo comedic tales in his later work Fallen Words (2009).

The adaptation history of his work is highlighted by the 2011 animated film Tatsumi, directed by Eric Khoo. This feature film is a unique hybrid that combines an animated adaptation of Tatsumi's own autobiographical manga A Drifting Life with segments based on several of his short stories, including "Hell," "Beloved Monkey," and "Good-bye". Tatsumi himself provided the voice-over narration for his life story in the film, but his primary and most significant role in the project is as the original creator and author of the source material.

Recurring themes in Tatsumi's work define his artistic identity as a chronicler of the darker side of human existence. His stories frequently explore the bleak and seedy underbelly of urban life, focusing on characters who are alienated, unfulfilled, and morally compromised. Common motifs include the psychological scars of World War II and the atomic bombings, the anxieties of Japan's post-war economic boom, poverty, desperation, and dysfunctional relationships involving violence and sexuality. His visual style, characterized by stark, realistic lines and heavy cross-hatching, perfectly mirrors the grim and oppressive atmosphere of his narratives.

Yoshihiro Tatsumi's industry significance is immense. By creating gekiga, he fundamentally redefined the manga landscape, proving that comics could be a serious vehicle for literary and adult-oriented storytelling. While his work was marginal for many years, it has since gained international acclaim, earning him numerous prestigious awards, including a Japan Cartoonists Association Award, an Inkpot Award, a Harvey Award, the Tezuka Osamu Cultural Prize, and multiple Eisner Awards. His legacy is that of a rebel who fought to give manga a new, mature voice, influencing countless artists and paving the way for the global acceptance of graphic novels as a serious art form.