Hiroya Oku Announces Retirement: The End of a Manga Legend Behind Gantz and Gigant

When Hiroya Oku decided to conclude his legendary manga career, he wasn't running out of ideas. At nearly 60 years old, the creative spark still burns within him. What has dimmed, according to his own words in a recent interview with Courrier Japon, is something far more fundamental: the sheer mental and physical stamina required to bring a manga to life.

Beyond Exhaustion: Understanding the Decision

The creator of iconic works like Gantz, Hen, and Gigant clarified that retirement doesn't mean creative bankruptcy. Oku still possesses that inner drive, that fire that pushes artists to tell stories. Yet the manga industry demands something beyond passion—it requires endurance through months and years of relentless work, from crafting intricate narratives to drawing every single panel.

"The process requires an enormous amount of mental and physical energy," Oku explained. For someone approaching sixty, that energy simply isn't renewable anymore. This isn't burnout from a lack of inspiration; it's the recognition that the body and mind can only sustain such demanding work for so long.

Kanrekihime: A Final Statement

Set to release in December 2025, Kanrekihime (The Sweet Sixty Princess) represents Oku's swan song. The story ventures into uncharted territory for the artist—no aliens, no UFOs, no supernatural phenomena dominating the plot. Instead, it centers on a group of middle-aged men sharing a house, united by a common fear: dying alone.

Their solution? A magical drug called "Neotype-16," which transforms whoever drinks it into a beautiful young girl. The narrative follows their journey as they learn to coexist with one friend who has undergone this dramatic transformation.

The Creator's Voice in the Story

Oku designed this final work as a vehicle for exploring the perspective of middle-aged protagonists—something deeply personal. He admits to projecting himself and his fellow manga creators onto these characters. It's a reflection on aging, creativity, and the passage of time in an industry that never stops demanding more.

Despite the absence of his signature sci-fi elements, Oku hopes readers will accompany these characters through to the very end. It may be his last gift to the manga world: a story about acceptance, change, and finding beauty in the twilight years of life.