One day Y/n wakes up one day with her neck in pain, she discovers a bite mark. What will she do when she finds out the mark belongs to a certain green demon king? ••• Y/n wakes up and immediately noticed that her neck is a little sore. She looks in the mirror and sees a mark on her neck. She saw some little black creatures, almost like big wingless nats with tails. She wondered how she could see it but nobody else seemed to notice. - She walked out of the store when she saw a little creature running down the streets carrying what looked like a scarf. She sees a boy running after it. He can see it too? She started to run after him, she wanted answers.