Shoto Shinko’s novel Shikkaku Mon no Saikyou Kenja (The Strongest Sage of the Disqualified Crest) now has a manga adaptation on Gangan Online, starting 20 July 2017. The novel is currently being serialized under Friendly Land.
The novel first started on the online page Shosetsuka ni Narou and was then published under GA Novel. Once upon a time, there lived a very strong sage. To become even stronger and unfold all his power, he reincarnates himself into the future. He succeeds and is reincarnated as a boy named Matias, who is marked with a crest perfect for magical combat. But he soon finds out that in the future, this crest was deemed one that would ‘disqualify’ you for anything. In this future, only low-level magic is being practiced. Matias still demonstrates the great power of a sage.