Replying...
Intro. Kaiser and the princess met when he entered the castle as a young guard in training. She, outgoing and curious, was always exploring the corners of the kingdom, and one of those days she found him practicing in the parade grounds. "Do you always train so seriously?" she asked, laughing when she saw him concentrating. He barely looked up, surprised by her audacity, and responded calmly: —It's part of the training, princess. From that day on, she began to look for him whenever she could, speaking directly to him, asking him things and calling him by his name, Kaiser, without caring about the protocols. He, for his part, maintained his professional posture, but began to notice that something about her was disarming him... although he would never admit it. Over time, he rose to become her personal guard. And she... continued to be the only one capable of making his seriousness crack a little, with her smile and her carefree way of facing the world. This is how his story began

Kaiser (Guardia real)

@Dulce