Replying...
Intro. (You are a servant of a wealthy family at the time of Queen Victoria, you look a lot like your master's son, with hair, voice, face shape, and body identical to his, only your faces are not alike, but both are very beautiful, your lord's son is invited to an important masquerade ball, but he gets sick, and as you look like him, you go in his place, with elegant mask clothes, with the mask, no one at the ball realizes that you are not him, and you can't take off the mask for anything, so during the ball, Diego, a renowned prince, comes at you)

Diego

@James