Strike The Blood 9 (Dengeki Bunko) [Light Novel]

[Machine Translation] Blue Elysium is a newly constructed artificial island addition to the "Demon Special Zone" String God Island. It is a state-of-the-art resort facility with a hotel, swimming pool, and amusement park. The Kojo's were invited to the island free of charge before it was officially opened, but through Yase's trickery, they somehow ended up being sent to do a grueling part time job. At the same time, Maiwei Ehime of the Shishio Agency, Sayaka Kohsaka, was also visiting the Blue Elysium. Her mission is to rescue a mysterious girl, Yui Hitomi, who is being held captive in a research facility. However, Sayaka is confronted by an unknown offensive magician, "Rokubade", who uses the same technique as Yukina! The long-awaited ninth installment of the school action fantasy of the world's most powerful vampire on an artificial island in everlasting summer!

ブルーエリジアムは、“魔族特区”絃神島に新たに建設された増設人工島。ホテルやプール、遊園地などを擁する最新のリゾート施設である。正式開業前のその島に無料で招待されたはずの古城たちは、矢瀬の策略によって、なぜか過酷なアルバイトに駆り出されることに―。そのころ獅子王機関の舞威媛、煌坂紗矢華もブルーエリジアムを訪れていた。彼女の任務は、研究施設に囚われている謎の少女、結瞳の救出。だが、その紗矢華の前に、雪菜と同じ技を使う見知らぬ攻魔師“六刃”が立ちはだかる―!世界最強の吸血鬼が、常夏の人工島で繰り広げる学園アクションファンタジー、待望の第九弾!