The Strongest Sage with the Weakest Crest

The Strongest Sage With the Weakest Crest, also known as Shikkakumon no Saikyō Kenja (失格紋の最強賢者) or simply Shikkakumon (失格紋), is a Japanese light novel series, written by Shinkoshoto and illustrated by Huuka Kazabana. It began serialization online in December 2016 on the user-generated novel publishing website Shōsetsuka ni Narō. It was later acquired by SB Creative, who have published fourteen volumes since May 2017 under their GA Novel imprint. A manga adaptation with art by LIVER JAM&POPO has been serialized online since July 2017 via Square Enix's online manga magazine Manga UP!. It has been collected in seventeen tankōbon volumes. The manga is licensed in North America by Square Enix. An anime television series adaptation by J.C.Staff premiered in January 8, 2022.

An English dub will be released on February 19, 2022 on Crunchyroll.