Kizumonogatari I: Tekketsu-hen kicks off the Kizumonogatari trilogy, offering a dark origin story for the Monogatari universe. When high schooler Koyomi Araragi is saved from a mortal wound by the legendary vampire Kiss-Shot Acerola-Orion Heart-Under-Blade, she heals him with her blood, turning him into a kind of vampire and pulling him into a perilous world of undead power and memory. As Araragi protects Kiss-Shot and uncovers her identity, a bond forms that sets the course for the rest of the saga.

Kizumonogatari I: Tekketsu-hen kicks off the Kizumonogatari trilogy, offering a dark origin story for the Monogatari universe. When high schooler Koyomi Araragi is saved from a mortal wound by the legendary vampire Kiss-Shot Acerola-Orion Heart-Under-Blade, she heals him with her blood, turning him into a kind of vampire and pulling him into a perilous world of undead power and memory. As Araragi protects Kiss-Shot and uncovers her identity, a bond forms that sets the course for the rest of the saga.