You Call That Service? Novel Vol.1 (US)

When a vampire kingdom suddenly appears within the borders of Japan, a beautiful boy-meets-vampire romantic comedy blooms! One fateful day, Ryouta wanders into a town that's been declared sovereign territory by the rulers of the night and before he can blink, an adorable vampire pounces him. Now, his only duty in life is to serve her hand and foot as her minion in the hilarious, romance-filled days to come!