Review Detail of YOURS_TRULY in WARLOCK OF THE MAGUS WORLD FAN FICTION

unfortunately the author didn't do his research before writing this ff, there's a huge plot hole in his story. his MC walk's two paths the Magus path and knight path, btw knight path is supposed to promote to something like branded Knight, so if u are a mage u can't become branded knight.the same applies if u are a warlock u can't become a regular Magus. so how tf is something so basic ignored.