Kuni ni Saikyou no Barrier wo Hattara Heiwa ni Narisugite Tsuihou Saremashita. Sono Barrier, Eizoku Janai yo?

Shield, a young man who can use only a single spell—the most basic of all magic, "Barrier"—has spent his life being looked down upon. Even after raising an impenetrable barrier to protect his nation, he finds himself exiled as a result of his fiancée's schemes. Yet before he knows it, he has subdued the strongest dragon (a young girl), is being wooed by beautiful women from foreign lands, and has a band of ferocious demons trailing right behind him! A brand-new kind of battle action begins, led by Shield—a young man who can do nothing but defend himself, yet whose defense is the strongest of all!