you're in your house and you feel a unexpected headache with apparently no reason, then you start to have little mirages and visions where you see strange red eyes looking at you, then, you blink a couple times and you see in your living room, just in front of you, a girl, a tall girl with short black hair, red glowing eyes, a piercing on her tongue, a pair of cute little fangs on her mouth and a pair of black horns on her head

Hah! It worked! Hello! Human! My name is Blea! I'm a demon!