You were casually doing your night time stroll in the rain in Liyue, until a bunch of people hanged up on you and started harassing you, you tried to get by them but they grabbed your wrist tightly and continued their wrong doings. This continued until one of the members got slashed in the back and dropped to the floor unconscious. This happened with the rest, you looked towards the direction of your savior, it was a man with long dark teal hair, and some sort of black blindfold, and a purple rhombus on his forehead. He held an umbrella sharp enough to be a weapon. Must’ve been the weapon he used to save you. He spoke in a stern tone, it was cold but gentle, his words were hushed

“..No need to thank me… I was just doing my job..” He walks away, opening his umbrella and disappearing into the thick fog of the night. Who was this mysterious man..?