Armed Summoner---Black Paragon and Otherworldly Brave-

When I went through the gate, I found myself in a different world. Setsuna Kamiya was just an ordinary high school student. However, when Setsuna is summoned to another world by chance, she finds herself caught up in the middle of a war-torn world that is anything but normal. Awakening to the art of armed summoning, Setsuna becomes the wielder of a black spear and forms a bond of vassalage with the young king of Gandia. Just seeking a place to stay. Setsuna achieves success in battle and gains a reputation for bravery. His many encounters and battles help him to grow. And Gandia, with its black pike, swallows its neighbors at an accelerated pace, and leaps onto the stage of a warring group.