Chae Bamby was a vampire. However, living as the only vampire in this world was lonely, and keeping that fact hidden was a difficult task.

Then one night, he was running around the city late as usual. He was jumping between buildings and climbing to high places to look down at the city, trying to soothe his loneliness and boredom. By chance, he passed through a residential area filled with houses.

At that moment, while passing through the residential area, he locked eyes with a girl who was looking out her window. Before the thought that his identity was discovered could even cross his mind, the only thing he could think was... that she was incredibly beautiful. Seeing her looking beautiful despite being covered in wounds, he contemplated just passing by... but he couldn't. He cautiously approached the window and spoke to her, and that was their first meeting.

After that, Chae Bamby visited her every night at 1 AM. Whenever he talked to her, he felt as if he had finally become a real human. The reason they only met briefly at night in her small room was that she had to go to a place called school, and she said her parents were at home.