Shūmatsu no Walküre Kitan: Jack the Ripper no Jikenbo #10

Shūmatsu no Walküre Kitan: Jack the Ripper no Jikenbo, known in English as Record of Ragnarok: The Case Files of Jack the Ripper, is a spin-off manga series that expands upon the narrative established in Shinya Umemura, Takumi Fukui, and Ajichika’s flagship Record of Ragnarok series. This particular volume, the tenth in the series, continues the serialized chronicle of the titular character as he navigates his own Victorian-era mystery, providing a darker, character-focused counterpoint to the tournament-heavy action of the parent series.

The art and character design for the spin-off are helmed by Keita Iizuka, who captures a distinct aesthetic that bridges the gap between historical noir fiction and the exaggerated, high-energy style of the main manga. By focusing on Jack the Ripper—one of the series' most divisive and complex figures—the publication aims to explore the philosophical and psychological origins of the character. Its release is part of the broader strategy to deepen the lore of the Record of Ragnarok multiverse, consistently attracting fans of the original supernatural combat epic who seek more granular character development.