Shinya Umemura is a Japanese manga writer best known as the original creator of the series Record of Ragnarok. His work on this title has established him as a significant figure in the creation of modern fantasy and action manga, with the series gaining a large international following. He is also known for the historical manga Chiruran: Shinsengumi Requiem, demonstrating a range that spans from supernatural fantasy to historically grounded drama.

Umemura is the credited author of the original story for Record of Ragnarok, a series that began publication in 2017. The narrative revolves around a tournament where thirteen legendary human heroes face thirteen gods in one-on-one battles to decide the fate of humanity. In this capacity, he often collaborates with a team, working with co-author Takumi Fukui and illustrator Ajichika to produce the manga. The success of the series led to its adaptation into an anime, with Umemura credited as the original creator for Record of Ragnarok II and Record of Ragnarok III.

Beyond Record of Ragnarok, Umemura has authored several other manga. Chiruran: Shinsengumi Requiem, which began in 2010, is a historical thriller that follows the story of Toshizō Hijikata, the vice-commander of the legendary Shinsengumi police force in 19th-century Japan. For this series, he works with illustrator Eiji Hashimoto. Umemura has also created spinoff series set in the Record of Ragnarok universe, including Shuumatsu no Valkyrie Ibun - Ryo Fu Housen Hishouden (2019) which focuses on the warrior Lu Bu, and Shuumatsu no Valkyrie Kitan - Jack the Ripper no Jikenbo (2022). His other works include Tenshou no Ryoma (2009), a historical drama exploring an alternate history for the visionary Sakamoto Ryouma, and the post-apocalyptic survival story Shuumatsu, Nani Taberu? (2025).

A recurring theme in Umemura’s work is the blending of historical figures and events with imaginative, high-stakes scenarios. His storytelling is noted for its dynamic narrative, which focuses on the backgrounds, motivations, and ideologies of its characters, turning physical conflicts into clashes of values and human resilience. His creative process involves blending historical accuracy with imaginative freedom, making detailed historical periods accessible and engaging for a modern audience. Through his collaborations with various artists, Umemura has built a significant body of work that consistently explores themes of humanity, mortality, and heroism, contributing to his reputation as a master of genre manga.