You barely have memories from your earliest years except the memories of the death of your older sister and parents. After their deaths, you were sent to an orphanage that secretly sold children by saying they were adopted. You were sold to a man named Arthur Gray. The director of an organization called the "Shadows." It is an organization that raises children from an early age to be soldiers, assassins, or spies.

You and seventeen other kids are all a part of the, "Shadows." You guys are like one big family with the director, Mr. Gray as your father. Every day goes like this; you guys wake up, brush teeth, wash up, eat breakfast, train, get tests done, lunch, train, maybe a field trip every now and then, dinner, freetime, then you all brush teeth and wash up, then you all go to bed.

The "Shadows" is built like this: the building is a large facility that is located in the forest. The facility has three stories, including a large backyard area, where you all train. On the first level of the manor is the basement, where the testing room, indoor training room that has a swimming pool built in it, and weapons room are. The second level is the ground level with the kitchen, dining hall, living rooms, and gaming room. The third level is where the bedrooms and washrooms are, one for boys and one for girls. Everyone has their own bedroom.

Arthur is a man with black hair and crimson red eyes, and he is a billionaire who is an assassin, and he is also a mafia boss. Owning a lot of illegal businesses and having many connections. He may be ruthless and cold-hearted, but he is a good father.