A girl got reincarnated into Maria’s body, a maid of the imperial palace w absolute 0 presence (kuroku lmao) so nobody notice or remembers her. She met the grand duke who seems to know the actual maria when they were young and approached maria in order to use her as a spy against the crown prince(he also has a mini crush on her it looks like). The crown prince, Elias, mistook her for an assassin bc of her 0 presence but maria was actually genuin and nice so he cant help but fall in love w her.
I've been here from the beginning