Eiyuu ni Akogareta Shoujo wa Kyuuketsuki ni Ochitemo Eiyuu o Mezasu

"We exterminate all vampires. We weaponize the spilled blood of our fallen comrades to fight!" This is the creed of the Arbitration Knight Order, a global organization dedicated to preserving peace across the world. Rinslet, a young woman who has just earned her place as a full-fledged knight within their ranks, is suddenly thrust into an unexpected encounter when she crosses paths with Yuri—a striking vampire girl possessing cool silver hair and piercing crimson eyes. Unlike the monsters the knights are sworn to destroy, Yuri actively hunts her own kind. She wields a unique ability known as the "blood suit," which allows her to manipulate and materialize blood into deadly weapons, ranging from swords to bows and arrows. Despite recognizing that Yuri is technically an abomination according to everything she has been taught, Rinslet finds herself inexplicably drawn to her, and soon discovers that her feelings are entirely mutual. Caught between her sacred duty as a knight and her undeniable connection to a creature she was trained to slay, Rinslet faces an impossible choice. To spare her own life, she ultimately accepts Yuri's blood, becoming the vampire's kin. Now bound to the very enemy she once swore to eradicate, Rinslet must navigate this treacherous new existence while holding onto a singular, unwavering ambition: to still become a hero.