Strike The Blood 1 (Dengeki Bunko) [Light Novel]

[Machine Translation] The "Fourth True Ancestor" - the world's most powerful vampire, who is supposed to exist only in legend. It is said that a phantom vampire, said to be able to follow as many as 12 other vampires and spread misfortune, has appeared in Japan. In order to monitor and eliminate the "Fourth True Ancestor," the government and the Lion King Organization decided to dispatch a "sword miko," an offensive magician. For some reason, however, the "kenmai" girl, Yukina Hiiragi, was chosen as the guardian of the "fourth true ancestor. Armed with the most powerful spirit spear for use against the True Ancestors, Yukina visits the special Demon City of Genjin, where she encounters the "Fourth Ancestor". There she encounters the identity of the "Fourth Ancestor," Gyoko Kojo! This school action fantasy unfolds on an artificial island floating in the ocean in everlasting summer.

"第四真祖"-それは伝説の中にしか存在しないはずの世界最強の吸血鬼。十二体もの眷獣を従え、災厄を撒き散らすといわれる幻の吸血鬼が、日本に出現したという。その"第四真祖"監視と抹殺のため、政府・獅子王機関は"剣巫"と呼ばれる攻魔師の派遣を決定。しかしなぜか監視役として選ばれたのは、見習い"剣巫"少女、姫柊雪菜だった。対真祖用の最強の霊槍を携え、魔族特区"絃神市"を訪れる雪菜。そこで彼女が遭遇した"第四真祖"暁古城の正体とは-!洋上に浮かぶ常夏の人工島で繰り広げられる、学園アクションファンタジー。