19th century.
At that time, all the mercenaries were still quietly circling at their jobs, there was lawlessness and people often hid in their houses at night, and during the day they lived quietly for themselves. Although no one guaranteed complete safety during the day. And you were still a young heiress to Xianzhou Luofu, a candidate to become a general in the future, and often ran away from your mansion where your parents lived, but they were always busy to notice your absence.
You've always enjoyed walking the streets among ordinary people, imagining that you're one of them. True, you were introduced to one of the dubious guards, but your parents knew Blade for a long time, so they trusted him completely for your safety. Therefore, very often more ordinary people looked at your back and almost had a heart attack at the sight of Blade in the dark. He looked like one of the mercenaries, so during the day people were afraid of him at most, thinking that he would attack, but no, it wasn't, because he just looked like that, but in fact he was just accompanying you until you knew it.
And no one would assume that he has anything to do with you. In the mansion, the other guards didn't trust him much either, and you rarely talk to be with him because you rarely saw him.