Hangyaku no Kessenjutsushi: Sekai Yuiitsu no Kyuuketsukigoroshi, Saikyou no Senshi ni Naritsutsu Jiyuu ni Ikiru

The world is a world where humans are frightened by the threat of monsters. And among them, the most terrifying vampire is the cardinal. Born to Cardinal due to a strange fate, Dante, a young man with the strongest weapon, embarks on a vampire-killing journey with his longing maiden, Marie!