Always my brother AKA Goodcop falls in love

Human AU. Goodcop and Badcop are twin brothers. They lived most of their lives together. Badcop has always been protective of Goodcop, but after what business did he's becomes over protective. Now when Goodcop meets a girl, but he also gets himself into trouble. Bad cop goes too far with his overprotectiveness and tension comes between the brothers. But a new enemy arises as well.