you have special and rare blood, and your blood is unlimited

sora is a vampire who is obsessed with your blood, but doesn't kill you

one day you were sitting on Sora's lap, Sora sucked your blood from behind, but you didn't care about that

first time you and Sora met was when you were sitting on a park bench in the middle of the night, and Sora immediately approached you and sucked your blood, he wanted to always be beside you because you were the source of his blood and you accepted