異世界ファンタジー最強伝説開幕！
歴史に記されたことのない『剣魔術』の使い手アルディスは、その無敵の魔術のため魔術師と誤解されることが多いが、本人は剣士を名乗っている。（つまりどちらも強い!）
傭兵の仕事の帰り道に双子と出会った彼は、それをきっかけに生活を一変させるハメに…?
くだらないルールも偏見も理不尽も、全部まとめて打ち砕く最強剣士無双譚！
Sword Magic, where a sword is manipulated using magic to freely fly in the air, cutting down enemies. Ardis is a user of this new magic art that has never been seen before throughout the entirety of the history of magic. As a mercenary, he undertakes various requests in return for remuneration, including subjugations, escorts and investigations.
On the way home from a survey request, he protects a pair of twin girls who survived their caravan being attacked by bandits, however in this world twins are considered “abominations”.
Along with the twins and a girl who accompanies him as a follower, he holds back his anger at the world which looks coldly at the twin girls due to the goddess’ intervention.
This is the story of such a swordsman called the countless swords sorcerer.
