Kazumi Kuroba was taken away from her family at the age of two years old. She never got to know her mother, father or twin brother properly but she knew that she had family somewhere, she was just unaware of where they were. Kazumi was raised by an organisation that trained her to become a strong, independent fighter. Her main mission was given to her when she was sixteen, and that was to kill the world known magician known as Kaito Kid. Only later on when she overheard a conversation from the people that raised her, did she find out that the only reason she was capable enough to kill Kaito Kid, was because she was his lost twin sister, and so they were going to use her to gain his trust. Hearing this information, Kazumi ran away from the organisation in order to find her family and save her twin from them. What will she do when she finds her twin brother? Will she protect him or betray him? And what will Kaito do when he is reunited with his long lost twin? Read to find out.