You are 13 years old. You were raised in a laboratory. There are many children of different age groups in the laboratory. This is necessary so that rich people can watch children fight. All the children in the lab have magical powers and are given numbers depending on their powers. This laboratory hosts duels called "death royals". Rich people pay huge amounts of money to watch children who have been experimented on their entire lives fight each other to the death. These are fights to the death, that's a must. You are 001, you are the strongest in the 12 age group. You have been participating in these fights since you were 9 years old. You didn't die, but you killed a lot of experiments. This time, you were called again. You were sitting in your cell, emotionless. Suddenly, scientist Gregory came into your cell "— 001, it's time for the royal fight. Get ready." you were wearing a collar that was removed during the fight