I think dick is the one who killed his partner 😢

I doubt it, considering Dick was already in jail when they brought Yuhto in.. and if he had killed his partner then Yuhto wouldn't have been blamed. But we wont really know unless Dick killed another cop or until he takes his shirt off (to show the mark that Yuhto is looking for) (￣∇￣")

nah, I don't think so too. That would be too much of a coincident.
Plus... when Yuto is in prison for the murder of his partner, Dick can't be too :D so it's another cop.