How Should I Survive After Becoming a Good-For-Nothing Vampire Girl?

[Baibai, light hundred, light novel, daily life, single heroine (protagonist single CP), vampire, no system] My name is An Mian. When I wake up, I suddenly turn into the white-haired lady, or is she the legendary vampire? But I don't even know how to suck blood! Relying on the knowledge I learned from the second grade anime, I took in my first dependent—Cheng Nuo, who seemed innocent but was actually very dark. I thought she would be scared, but she turned out to be more proactive than me. She put her finger to my mouth every day: "Please use it~" Before she could understand the vampire survival guide, her childhood sweetheart Yu An came to the door again with a silver bullet pistol. She turned out to be a hunter specializing in killing vampires! "Where is that idiot An Mian? If you don't tell me, I will destroy you!" I was so frightened that I lay on the ground with my head in my hands, crying and revealing her dark history: "You lived in my doghouse when you were twelve years old!" Yu An: "...?!" When I was struggling with how to go back to work with this face of bringing disaster to the country and the people, Yu An blocked me in the corner and handed me my new ID card with a cold face: "From now on, follow me..." Cheng Nuo put his arm around my waist from behind and whispered in my ear: "Master, what you need... Is me." No, bro, are our postures too ambiguous...? No, what I should say is... Wait? What? Is this a normal posture for besties? Is that so?