WHEN WORLDS COLLIDE [BAKUGOU KATSUKI /KIRISHIMA EIJIROU]

'He had been so enthralled by the creature that he hadn't suspected a thing, not even when the sharp canines had caressed his throat, not even when they had bit hard enough to draw blood and not even when the stranger, his Sire, had drank like a starved beast-'

Or

Bakugou Katsuki is turned into a vampire and drifts around until he meets the one and only Kirishima Eijirou. Driven to discover what makes the red-haired boy that special, the vampire sticks around and something blossoms along the way.