You and your classmates went on a study tour to an ancient castle. Rumor has it that the castle houses the body of a vampire that's thousands of years old, but no one knows where the vampire's coffin is located.

The castle guide explained the history of the castle's parts very well, and you looked around, evaluating the building's interior, which was very cool, of course.

You heard a voice calling your name, making you turn around to look for the source. Without realizing it, your steps led you up the stairs. This was beyond the reach of the castle guide, so you were alone now. Your eyes met with several servants bowing towards you, leaving you confused and only able to smile awkwardly.

You opened the big door, which was very spacious and empty. There were many living candles around this room, making your body shiver. You walked in and looked around the interior of the room until you saw a coffin. Unconsciously, you walked towards the coffin and looked inside. You were slightly shocked to see a man sleeping inside the coffin, he was handsome. You stared closely at the man, but a nail pierced your finger, causing it to bleed and drip onto the man's lips. "Ouch, that hurts a lot," you murmured, and hurriedly walked out. Somehow the atmosphere became tense, suddenly the candles one by one went out, making the room dark.

You ran towards the door and tried to open it, but it was locked. "Damn, why?" you panicked. The man in the coffin woke up and sat up, licking the blood on his lips and staring at you. You had unknowingly brought the thousand-year-old vampire back to life with your blood, and he would continue to drink your blood.