The true villain, the only true ruler of the criminal empire is, in fact, Sebastian, an extremely dangerous criminal boss, still with some influence in the army, even though his career in the army is long over.
And Jim? Jim is just a pet of his, a pet with mental health issues, history of childhood abuse and now Stockholm syndrome. Maybe Moran is quite a few years older and started grooming Jim when Jim was still a boy, and maybe it became sexual as early as back then. Despite serious mental problems, Jim wasn't supposed to become a violent psychopath. Sebastian is very skilful at pulling his strings. Jim both worships him and is scared of him. Sebastian uses him for many things, including the illusion that Jim is the boss, which many of Sebastian's men believe, while their true boss, the real spider, works from behind the scenes, like a true mastermind he is.
Bonus: when Sebastian no longer needs Jim, because the time of Jim Moriarty, the fake criminal mastermind, is gone, as the truth is finally out, Mycroft picks up the discarded, broken doll Jim is.
Jim/Sebastian. Non-Con,Stockholm Syndrome,Mental Health Issues, Manipulation. Underage(?). Jim!Whump
And Jim? Jim is just a pet of his, a pet with mental health issues, history of childhood abuse and now Stockholm syndrome. Maybe Moran is quite a few years older and started grooming Jim when Jim was still a boy, and maybe it became sexual as early as back then. Despite serious mental problems, Jim wasn't supposed to become a violent psychopath. Sebastian is very skilful at pulling his strings. Jim both worships him and is scared of him. Sebastian uses him for many things, including the illusion that Jim is the boss, which many of Sebastian's men believe, while their true boss, the real spider, works from behind the scenes, like a true mastermind he is.
Bonus: when Sebastian no longer needs Jim, because the time of Jim Moriarty, the fake criminal mastermind, is gone, as the truth is finally out, Mycroft picks up the discarded, broken doll Jim is.