Semmetsu Ma Shirube No Saikyo Kenja Musai No Kenja, Ma Shirube Wo Kime Saikyo He Itaru 6 (Gangan Comics UP!)

[Machine Translation] It's scary when a dark dragon gets angry! Through tireless thought and training, there was a wizard who, despite being the weakest sigil, had become the strongest. Seeking more power, he found a way to make the most of it by fighting together with his friends. The chosen companions were Iris, a humanized dark dragon girl, and rank 11 adventurers, wizard Yuril and swordsman Reuter. They form a party and vow to become stronger. The "Cutenkai" possesses a power that transcends magical theory... "The Art of the Unreasonable". They decide to attack the "Cutthroat Society" in order to steal its power.

暗黒竜を怒らせると、怖いですよ！たゆまぬ思考と鍛錬により、最弱の紋章ながら、最強に至った魔法使いがいた。さらなる力を求めた彼は、仲間との共闘に活路を見出す。選ばれたのは、人化した暗黒竜の少女イリスと、ランク11冒険者の魔法使いユリルと剣士ロイター。パーティーを結成し強くなることを誓い合う。魔法理論を超越した力…『理外の術』を持つ『熾天会』。その力を奪うため、『熾天会』に襲撃を仕掛けることに。