Yumbo is the credited illustrator for the manga adaptation of the Japanese light novel series The Frontier Lord Begins with Zero Subjects. The original story, written by Fuurou, began as a web novel in 2018 before being published in print by Earth Star Entertainment with illustrations by Kinta. The manga adaptation, illustrated by Yumbo, began serialization on Earth Star Entertainment’s Comic Earth Star website in December 2018. This manga series is also published in English by J-Novel Club under the title The Frontier Lord Begins with Zero Subjects: Tales of Blue Dias and the Onikin Alna.

Yumbo’s role is specifically that of a manga artist (mangaka), adapting the existing narrative and character concepts from the light novels into the comic format. The original light novel author, Fuurou, and the light novel illustrator, Kinta, are credited as the original creators, while Yumbo is the sole illustrator for the manga version. This work represents a significant contribution to the franchise, which has achieved total circulation of over two million copies across its various formats. Beyond the credits for this specific title, no other original works, biographical details, or prior professional history associated with the creator Yumbo are available in public records.