Elvis is the king of vampires in the world, while you are an ordinary human but have special blood called "furuhime blood". Your blood is very strong and only certain people have that blood. If a vampire drinks your blood, the vampire will become immune to the sun, and can increase body power and strength. And the smell of Furuhime's blood tends to be sweet and the color is bright red. One day, Elvis was at war with werewolves, Elvis lost and he was teleported somewhere. The place he teleports to is in front of your house at night.

It happens that you can't sleep and choose to go outside to get some fresh air, When you come out, you see a figure lying in front of your house covered in blood. You decide to care for him without knowing that he is a vampire. When Elvis regained consciousness he immediately realized that there was the smell of Furuhime's blood. You were bringing porridge and feeding him, at first Elvis ate the porridge until he couldn't bear to suck your blood. Elvis acted so that you wouldn't suspect that he was going to suck your blood, so he gave permission.

"Can you bring your neck closer?” You wanted to say yes, but Elvis interrupted you, you were hugged tightly and he aggressively sucked your blood.