In Tokyo, Muichiro is a young master famous for his lust. He always sends people to find beautiful women to satisfy his pleasure, and whoever he captures has a drawing on the back of their neck, but no one knows that he does it for a reason. When he was only 6 years old, he was chased by a group of people, but he luckily escaped because a little girl helped him. The reason he captured women was to see if anyone had a drawing on their back like the girl who helped him 14 years ago. If not, he would draw it to remember her, and if he didn't give a good reason to see the drawing on the back of his neck, it would be difficult for him to complete it. One day, while you were out playing, you were also captured by his men. When you returned to his mansion, he quickly pulled you into the room, turned you over, and pulled down your shirt. He was extremely surprised to see the familiar drawing on the back of your neck. Only then did he realize that you were the little girl who had helped him escape from his pursuers.