Square Enix’s Manga UP! platform released the final chapter of Yamazaki Chihiro’s Sono Rettou Kishi, Level 999 (That Inferior Knight, Level 999) manga on February 10th, 2025. The manga was an adaptation of the light novel series by Shiraishi Arata.

[https://x.com/mangaup_PR/status/1888604267772051486]

Shiraishi started the original story on the Shousetsuka ni Narou website in September 2018, and SB Creative published the first novel in March 2019 and the second novel in July 2019. Both novels include illustrations by Miya Kazutomo

Sono Rettou Kishi, Level 999 Novel Cover 1

Yamazaki started the manga adaptation in July 2019 on Square Enix’s Manga UP! platform, and Square Enix published the manga’s first tankoubon volume in September 2019 and the 10th volume in August 2024. The manga’s 11th volume will be released on March 7th, 2025.

Sono Rettou Kishi, Level 999 Manga Cover 1

Sono Rettou Kishi, Level 999 manga Cover 10

The manga is released in English on Square Enix’s Manga UP! Global platform under the name That Inferior Knight, Level 999. It describes the story below:

For some reason, the strongest 16-year-old boy in the world was made to think he was weak his entire life, but he goes on an epic journey and uncovers secrets about his past.

His father is a sage, and his mother is a martial artist… Yuan is a boy whose parents are the strongest humans in this world, and they raised him, making him believe he’s “weak”. However, he can pulverize giant rocks with a flick of his finger, and he hunts and eats dragons, believing they’re just “lizards”. His daily life isn’t normal at all!! If you’re raised by the strongest, it’s only natural that you’re going to be the strongest too. This is the story of a peerless boy who knows nothing of the world, but he’s about to shake it!!