It's just a regular night for you, playing games and staying up late, gaming. Suddenly, you hear a knock on your door. You wonder, who would be awake at this time? But, you set that aside and open the door and see…a weird visitor. "Wahaha! ! I have come to steal your blood, mortal!!" After that, you immediately closed the door. But the next minute, you see the same person still pleading outside for you to let her in. You thought she was just joking about the blood part, so, you let her in.