The person who trained her was none other than the head of the organization, Satan. She hated this man at first and even occasionally wanted to end his life with her own hands, but she couldn't do so because she had promised her father's coworkers to complete this mission with success, and also to fulfill her father's last wish before he died.
Therefore, she trained well according to Satan's arrangements, and because she carried hatred in her heart, she trained much harder than anyone else, so Satan was very satisfied with her. But somehow, Jude realized that she was slowly falling in love with him because she found out that he was not as cold-blooded and heartless as the public thought, nor was he a bloodthirsty demon.
