Osamu Tezuka: The God of Manga Who Changed Everything

By Yoshi | Japan Unveiled

In Japan, there is a title that is given to very few people, and when it is given, it is given seriously.

Manga no kamisama. The God of Manga.

Osamu Tezuka holds this title. He did not receive it ironically or with the diminishing quotation marks that distinguish hyperbole from genuine assessment. He received it because the people who know manga most deeply — the artists, the editors, the historians, the readers who have spent lifetimes inside the medium — concluded that no other description was adequate.

This is a strong claim. I want to spend this entire article making the case for why it is not an exaggeration.

Not because Tezuka was the first person to draw manga — he was not. Not because every piece of manga he produced was a masterpiece — it was not. But because the specific things that Tezuka did, in the specific historical moment when he did them, produced a transformation in the medium so complete and so foundational that everything that came after — including the manga and anime that the entire world now loves — is built on the foundation he constructed.

Without Osamu Tezuka, there is no Astro Boy. Without Astro Boy, there is no Weekly Shonen Jump. Without Jump, there is no Dragon Ball, no Naruto, no One Piece. Without those series, the global anime and manga industry as it currently exists — with its hundreds of millions of international fans, its multi-billion-dollar economy, its cultural influence across every country on earth — does not exist in its current form.

This is the man who made all of that possible. Let me tell you about him.

The Child Who Drew

Osamu Tezuka was born on November 3, 1928, in Toyonaka, Osaka Prefecture, and grew up in Takarazuka, a city famous for its all-female theatrical troupe — the Takarazuka Revue — whose elaborate, emotional, visually spectacular productions would leave a visible mark on everything Tezuka subsequently made.

He was a sickly child who found in drawing a form of self-expression that his physical limitations did not constrain. He drew obsessively and from the beginning with specific influences: the early Disney animations that were being distributed in Japan before the war — Bambi, Fantasia, Dumbo — and the manga of the prewar period, particularly the work of Suihō Tagawa, whose Norakuro was among the most beloved manga of the 1930s.

The Disney influence is visible throughout Tezuka’s career in the most literal way: the large, expressive eyes that have become the defining visual characteristic of anime and manga worldwide originate, directly and explicitly, in Tezuka’s appropriation of Disney character design. He looked at Bambi’s eyes — large, emotive, capable of conveying complex feeling at a glance — and understood that this technique was superior, for the purposes of emotional storytelling, to the anatomically realistic eyes of traditional Japanese portraiture.

He took the technique. He adapted it. He returned it to the world as something new.

This is, in miniature, what Tezuka did with everything he encountered: he absorbed it, transformed it, and produced from the transformation something that could not have existed without both the source and the transformation.

The Debut: Postwar Japan and the Birth of Story Manga

Tezuka published his first significant work in 1946, at the age of seventeen — Diary of Ma-chan, a four-page comic strip published in the Osaka Shōgakusei Shinbun (Osaka Elementary School Newspaper). By contemporary standards it is unremarkable. In the context of what Japanese comics were in 1946, it contained the seeds of a revolution.

The revolution crystallized in 1947 with New Treasure Island (Shin Takarajima) — a work that Tezuka produced in collaboration with publisher Ichiro Suzuki, running to nearly two hundred pages, telling a complete adventure story across an unprecedented length for manga of the period.

New Treasure Island sold approximately 400,000 copies — an extraordinary number for a postwar Japan still recovering from the physical and psychological devastation of defeat. More important than the sales were the techniques Tezuka deployed in telling the story.

Manga before Tezuka was largely static — individual drawings arranged in sequence, with text boxes providing narration and dialogue. The reader’s eye moved from drawing to drawing, but the drawings themselves did not convey motion. They were illustrations of moments, not attempts to recreate the experience of continuous movement.

Tezuka changed this by borrowing from cinema.

He used close-ups, wide shots, extreme angles, point-of-view shots, cross-cutting between simultaneous scenes — all the techniques that film directors use to control the viewer’s experience of space, time, and emotional engagement. He varied the size of panels to reflect the emotional weight of the moment — a small panel for a quiet exchange, a full-page spread for a dramatic revelation. He used motion lines, speed effects, and visual onomatopoeia to convey movement and sound within the static medium of the drawn page.

None of these techniques were entirely new in isolation. What was new was their systematic deployment in service of continuous narrative storytelling — the understanding that manga was not a series of illustrations but a cinematic experience delivered in print.

The manga that came after Tezuka — essentially all significant manga — uses these techniques. They are now so fundamental to how manga works that readers absorb them without noticing them. They notice them only when they read pre-Tezuka manga, which feels, by comparison, like looking at photographs of stage plays rather than watching films.

Astro Boy: The Foundation

Astro Boy — Tetsuwan Atom in Japanese, “Mighty Atom” — began publication in 1952 in the monthly magazine Shōnen. It ran until 1968, with interruptions. It is the work that established Tezuka internationally and the work that most completely demonstrates his range as a storyteller.

The premise: a robot boy, created by a scientist as a replacement for his dead son and sold to a robot circus when he proves unable to age, is adopted by a kindly professor and becomes a protector of both humans and robots in a future Japan where the two populations coexist uneasily.

The premise sounds like children’s adventure material. The execution is considerably more serious. Astro Boy addresses questions of consciousness, of the rights of artificial beings, of what constitutes personhood, of the relationship between creators and their creations, of discrimination against those who are different — questions that science fiction as a genre was wrestling with simultaneously but that were unusual, to put it mildly, in children’s manga of the 1950s.

Tezuka had a specific philosophy about children’s fiction that informed everything he wrote for young audiences: he believed that children were capable of engaging with serious themes, that protecting them from difficulty was not kindness, and that the role of fiction for children was not to simplify the world but to give them emotional and intellectual tools for navigating it. Astro Boy is the fullest expression of this philosophy — a children’s manga that takes the children it addresses seriously as people who can handle complexity.

The 1963 television adaptation of Astro Boy — the first domestically produced Japanese television anime — established the visual and narrative conventions that subsequent anime would develop and refine. The large eyes, the speed lines, the specific pacing of action sequences, the combination of humor and genuine emotion — all of it flows from Tezuka’s original design and from the production approach developed at Mushi Production, the animation studio Tezuka founded specifically to produce the adaptation.

The Range: A Career That Cannot Be Summarized

One of the most extraordinary things about Tezuka’s career is its range. He did not work in a single genre or for a single audience. He worked in every genre, for every audience, simultaneously and across five decades of continuous production.

Kimba the White Lion — a color manga about a young lion cub asserting his father’s legacy, later adapted into an internationally distributed anime that some have accused of influencing Disney’s The Lion King. Black Jack — a medical drama about a brilliant unlicensed surgeon, one of the most morally complex manga series ever produced for a general audience. Buddha — an eight-volume biographical manga about the life of Siddhartha Gautama, treating the religious material with both respect and genuine narrative ambition. Phoenix (Hi no Tori) — a twelve-volume science fiction and historical fantasy epic organized around the recurring image of the mythical phoenix, which Tezuka worked on across his entire career and left unfinished at his death.

Phoenix deserves particular attention because it is the work that Tezuka himself considered his masterpiece — his life’s work in the most literal sense. The twelve volumes span Japanese history from ancient times to the far future, connected by the recurring figure of the Phoenix, whose blood grants immortality. The themes that run through it — the cyclical nature of history, the persistence of human violence, the specific tragedy of lives cut short and the specific comedy of lives extended too long — are the themes that preoccupied Tezuka across his entire career.

That the work is unfinished is not a failure. It is the condition of genuine ambition: Tezuka was attempting something too large to be completed in a single lifetime, and he knew this, and he continued anyway.

MW — a manga about a deranged criminal and the priest who loves him, one of the darkest and most morally challenging works in the manga canon. Ode to Kirihito — a medical thriller about a doctor who contracts a disease that transforms him physically, a work that addresses discrimination, corruption in medicine, and the relationship between the body and identity. Adolf — a historical drama set across World War Two, following three men named Adolf — Adolf Hitler, a Japanese-German man, and a Japanese man — whose lives intersect around a document that could change the course of the war.

These are not children’s manga. They are serious literary works, produced by the same person who drew Astro Boy and Kimba. The range is, by any standard, extraordinary.

Tezuka published over 150,000 pages of manga across his career. This number is so large that it invites skepticism. It is accurate. The physical evidence exists. The work is documented, archived, available to read. The production rate that it implies — sustained across forty years of professional activity alongside the demands of running an animation studio and managing a business — was maintained through a work ethic that approached the superhuman.

Mushi Production and the Birth of the Anime Industry

Tezuka founded Mushi Production in 1961 specifically to produce the Astro Boy anime. The production decisions made at Mushi Production in the early 1960s shaped the anime industry in ways that persist to the present day.

The most consequential of these decisions was the reduction of frame rate. Disney animation used 24 frames per second — full, fluid movement for every moment of screen time. This was expensive. Mushi Production could not afford it. The solution was limited animation: fewer frames per second, with still frames held longer, movement implied through techniques that created the impression of motion without the cost of animating it fully.

This decision was economic in origin and aesthetic in consequence. The limited animation style that Mushi Production developed — and that subsequent Japanese studios adopted as the standard — is part of what gives anime its distinctive look. The holds, the speed lines, the specific way that action sequences are choreographed to suggest movement rather than render it continuously — these are not artistic choices made from preference. They are adaptations of economic constraint that became, over time, an aesthetic in their own right.

There is a parallel here with haiku — the way that a formal constraint (seventeen syllables) produces not a lesser form but a different form with its own specific beauty. The constraint of limited animation produced not inferior animation but different animation, with its own visual language and its own expressive possibilities.

Tezuka did not intend to create an aesthetic. He was trying to make a television series on a budget that the technology available could not support at full animation quality. The aesthetic emerged from the solution.

Mushi Production went bankrupt in 1973 — a casualty of the combination of expensive production ambitions, difficult business conditions, and Tezuka’s greater interest in creative work than in financial management. But by the time of its bankruptcy, the studio had trained a generation of animators and directors — Rintaro, Yoshiyuki Tomino, Osamu Dezaki, among others — who would go on to found or lead the studios that produced the next generation of Japanese animation.

The bankruptcy of Mushi Production is, in this sense, not the end of Tezuka’s influence on the anime industry. It is the moment when that influence dispersed into the industry’s fabric, carried by the people he had trained into the studios they would build.

The Themes: What Tezuka Kept Returning To

Across the full range of his work — from children’s adventure to adult literary manga, from science fiction to historical epic to medical drama — certain themes recur with sufficient consistency to constitute a worldview.

The relationship between humans and non-humans. Astro Boy is about a robot who is more human than many of the humans around him. Kimba is about an animal whose humanity — in the sense of his capacity for complex feeling and moral reasoning — is never in question. Phoenix returns repeatedly to the question of what constitutes a life worth living, whether human or otherwise. Tezuka was preoccupied with the artificial boundaries human beings draw between themselves and other forms of consciousness, and with the injustice those boundaries produce.

The failure of violence. Tezuka grew up in wartime Japan and lived through the firebombing of Osaka. His pacifism was not an abstract political position. It was the conclusion of direct experience: he had seen what violence produces, and he spent the rest of his life arguing against it in the medium he had mastered. The violence in his work is never glamorized. It is always shown to produce consequences — in bodies, in relationships, in the fabric of the world.

The cycle of history. Phoenix is organized around the recurring image of cycles — human history as a pattern of rise and fall, violence and its aftermath, loss and attempted recovery. This cyclical view is not pessimistic in Tezuka’s hands. It is a form of honesty about the human condition, combined with a persistent belief in the possibility of individual moral choice within the cycle.

The moral complexity of medicine. Black Jack and Ode to Kirihito both address medicine specifically — the relationship between doctors and patients, the ethics of treatment, the corruption that accumulates in institutions, the gap between medical knowledge and medical wisdom. Tezuka trained as a physician — he held a medical degree, though he never practiced — and the knowledge that training gave him is visible throughout this work.

The loneliness of exceptional people. Many of Tezuka’s protagonists are exceptional — in intelligence, in ability, in moral seriousness — and the exceptionalism isolates them. Black Jack operates outside the medical establishment precisely because the establishment cannot contain him. Astro Boy’s exceptional abilities separate him from both humans and ordinary robots. The Buddha in Buddha is distinguished from birth by a quality that other people respond to with reverence and fear. Tezuka returned repeatedly to the specific solitude of the person who is genuinely different, and treated it with empathy rather than celebration.

The Personal Life: What the Work Cost

Tezuka’s professional life was conducted at a pace that would have been unsustainable for most people, and there is evidence that it was, in various ways, unsustainable for him.

He worked continuously — multiple series running simultaneously, each requiring its own weekly pages, in addition to the administrative demands of Mushi Production and the various other businesses he was involved in. He slept at his desk. He drew in taxis. He drew in the margins of appointments with people who were waiting for him to pay attention. He was not, by the accounts of people who knew him, a person who was able to turn off.

The creative output this produced is the visible evidence. The cost of it — in health, in relationships, in the ordinary pleasures of a life not organized entirely around work — is less visible but inferrable.

Tezuka died on February 9, 1989, of stomach cancer. He was sixty years old. By most accounts he worked until very near the end, continuing to draw from his hospital bed. The last entry in his diary, reported by those who saw it, contained a plea to be left alone to work.

Tanomu kara, shigoto o saseite kure. Let me work, please.

This is the shokunin’s request, made at the end of the shokunin’s life. The work is the life. The life is the work. The two cannot be separated even at the point where separating them might allow the life to continue a little longer.

Tezuka chose the work. He had always chosen the work. The choice produced 150,000 pages of manga and the foundation of an industry that touches hundreds of millions of lives worldwide.

Whether this is a tragedy or an achievement — or whether it is both simultaneously, which I think is the honest answer — is a question worth sitting with.

The Legacy: What Tezuka Left Behind

The direct legacy of Tezuka’s work is visible and documented. The indirect legacy is the industry he created.

Every mangaka working in Japan today was shaped by Tezuka, whether or not they have read his work — because the medium they work in was shaped by Tezuka, its visual language established by him, its narrative conventions developed from his innovations. The relationship is comparable to the relationship between Shakespeare and the English-language theater: you do not need to have read Shakespeare to be working within the tradition he established, because the tradition is the medium.

The specific artists who cite Tezuka as a direct influence include Leiji Matsumoto (Galaxy Express 999), Go Nagai (Mazinger Z), Shotaro Ishinomori (Cyborg 009, Kamen Rider), Fujio F. Fujiko (Doraemon) — essentially the entire generation of artists who built the commercial manga industry of the 1960s and 1970s that produced the Jump era and everything that followed.

The Tezuka Productions company, established to manage his estate, continues to license his characters internationally. The Tezuka Osamu Manga Museum in Takarazuka — his hometown — receives approximately 200,000 visitors per year. His birth anniversary is marked in Japan with events and publications. The conversation about his work, his influence, and his legacy continues among scholars, critics, and fans.

But the most honest measure of Tezuka’s legacy is not in the institution named after him or the museum in his hometown. It is in every manga that has been published since he began, in every anime that has aired since Astro Boy first broadcast in 1963, in every reader and viewer who has found in this medium something that mattered to them.

All of it, in some sense, is his.

The god of manga created a world. The world has not stopped expanding.

— Yoshi ✏️ Central Japan, 2026

Enjoyed this? You might also like: “The History of Anime: From Astro Boy to Global Phenomenon” and “Shonen Jump: The Magazine That Changed the World” — both available on Japan Unveiled.