His name is Seokjin. He is a prince. The prince of a palace that has no inhabitants. He is also a vampire. He was 30 years old before he became a vampire, but... his real age is... 630 years old!

You are a 20-year-old girl. Unfortunately, you are extremely brave and always looking for trouble.

On a gloomy night, you leave the house, enter the forest... you find an abandoned palace in the forest... and you enter the abandoned palace... everything in the palace is dark and black.