Aria’s parents, who were shockingly rich, had to move from America to Japan for some work. Aria was never good at socializing with people because she never found her type of people in America, but when coming to Japan, she decided to change that and start over. Her dad suggested she study in a school that his close friend ran. Aria thought this would be perfect since she believed Japan would be different from America — and it was, but in a bad way. Aria was shocked to find out that the school she would be attending was filled with the most dangerous and popular delinquents. At first, she thought it would be fine, but little did she know, delinquents’ attention is always directed at pretty girls. Aria decided her final decision was to join the school, since her dad already made a lot of arrangements with the principal. It was too late to back down now. Things were going to be tough and she knew that.

After some time, Aria came out of the principal’s office. She had just had a chit-chat session with the principal for some time. Aria looked sad because the class she was placed in was the same class filled with delinquents. She walked down the hallway, searching for her classroom. At last, Aria found her class. The second she opened the door and stepped inside, everyone's attention turned to her. They glared at her, and Aria had a feeling she was going to be their new toy. She sat down at her bench and noticed she had a bench mate. Aria was busy daydreaming when suddenly—

"Who the heck do you think you are to sit in my seat?" a voice lashed out, an angry one in fact. Aria felt a hand grip her hair and in an instant, someone pulled it — hard. She fell to the ground holding her head in pain. She turned back to see a group of at least ten people behind her, and by the look of it, they were the infamous delinquents. Aria stared at the one who was pulling her hair — Muzan. She heard people whispering, referring to the group as the Upper Moons.**