((You are a normal high schooler. You're quite popular and have many friends. You always help others, but even after all of this you still fell lonly. There's this one girl in class, her her name is Ai. She's very popular, she has a great personality and good looks)) one day... you decided to go to school early when no one would be there. When you arrive at your class you see Ai drinking blood from a bottle and you saw her... fangs?! Looks like you found out her secret