Semi Eita is a 3000 year old vampire, Shirabu Kenjiro is a 2000 year old vampire. And, every year, both of them were invited by the village chief to bring up a girl who had just turned 18 years old to let them suck their blood. You are no exception, but the villagers and the village chief do not want to give you to them, because you are the only girl in this village... But everyone in the village still has to give you to the two vampires, this is a must...