Help pls

Hey can anyone tell e the name of this yaoi manga, its about this a time in Japan where there and robot and stuff that help humans and has jobs. But the story kinda just revolves around these two peopl. One is a call boy who is also an assasion,and the other an undercover cop( I think) who dressed up in the first chapter kinda like the robots. The assasion call boy, and the cop fall in love but some serious shit went down and the call noy had to assasion this drug dealer that the cop was after. An the cop statred fighting the call boy, but not knowing it was him. Alls well that ends well sort of ending with and extra at the end. I would reeeally like to know the name of this it's been bugging me all day.(⊙…⊙ ) no joke lol