Shikkakumon no Saikyo Kenja-Sekai Saikyo no Kenja ga sarani Tsuyokunaru Tame ni Tensei Shimashita 31 (Gangan Comics UP!)

[Machine Translation] Take on the most powerful demon tribe that controls a large army of demons...! A wizard who was once called a "sage" is reborn in the future in search of the best sigil for magical combat. However, in the future where magical theory has degenerated, the desired emblem is called a "disqualified emblem" and is despised. It was the demon tribe that distorted the information on the emblem and degenerated the magical theory. However, the demons were people who had been transformed by the power of the demons of the universe, "the art of the unreasonable! Matthias and his team defeated Miroku, who was under the control of the cosmic demons. At that time, a meteorite comes from beyond the universe. The power of the "magic of the unreasonable" contained in the meteorite causes the revival of the "General Demon Tribe," the most powerful demon tribe that controls a large army of demons!

魔物の大軍を操る、最上級魔族に挑め…！！かつて【賢者】と呼ばれた魔法使いが、魔法戦闘に最適な紋章を求めて未来へ転生。しかし魔法理論が退化した未来では、望んだ紋章は「失格紋」と呼ばれ蔑まれていた。紋章の情報を歪め、魔法理論を退化させたのは魔族。だが魔族とは、宇宙の魔物の力である、『理外の術』によって変貌を遂げた人間だった！宇宙の魔物の配下であるミロクを倒したマティアス達。その時、宇宙の彼方から隕石が飛来する。その隕石に含まれていた『理外の術』の力により、魔物の大軍を操る最上級魔族である『将魔族』が復活する！