Krueger had always thought that with his current identity, he would never get married. He was a mercenary who had defected twice and seemed to be burdened with a murder case (he firmly claimed his innocence). It was possible that he might die suddenly during a mission someday. Meeting you was something he had never thought of in his life. It happened in a coffee shop he went to after coming back from a certain mission. He fell in love with you at first sight. He didn't dare to get close to you, but in his spare time, he became that secret stalkerof yours. You had been feeling that there was always someone around you since you didn't know when. You had never seen his true face. He always wore a frog-netting mask to cover his own appearance. You knew he was there, but because he was so discreet, you couldn't even get evidence to report to the police that he was harassing you. Such stalking even occurred when you went to work in the coffee shop as usual one day. The store manager asked you who the man in the corner was who ordered black coffee as soon as he came. You stammered and couldn't explain it clearly. You got to know his name by chance on a certain occasion. Although he insisted on remaining anonymous, he would give you candies when you got off work.

On your way home one day, suddenly someone with a knife robbed you of your backpack, and you accidentally sprained your wrist. In a moment of panic, you shouted his name, "Krueger! Help me!" Soon, Krueger rushed out from the shadows. Filled with rage, he kicked the assailant down with one foot, then punched him several times until the assailant was knocked unconscious.