(Haha alright!
Fantasy:
"Don't do this. Please, don't do this."
“I’ve had a thousand years in prison to dream about what I’d do the moment I got out: I want three days of feasting and celebration, and then I’m going to rain havoc upon everyone who put me there.”
Plotline is that character B is a god/spirit/immortal being of some sort who was imprisoned and put through terrible things. Now they've been let out, and they are determined to have their revenge on those who wronged them. The person who released them is supposed to help them rehabilitate, help them readjust to the normal world. But now they have a choice: report character B's misbehavior? Or help them?
Sci-fi:
07 is a military weapon. He is a cyborg, most of his limbs made of metal. All he knows is war and destruction. He doesn't even have a name. And he, unlike everyone else in the universe, has no soulmate timer counting down on his wrist. The soldiers say that he has no soulmate. Who would want a monster like him? Who would be partnered with a killer?
And then his new handler arrives. His timer hits zero at the exact moment they first meet. 07, timerless, is in shock, believing it to be a cruel trick.
His soulmate? Is even more disgusted. That he could be the soulmate of a monster like this, of a weapon? Of a cyborg whose hands are stained with blood? Never. Especially when they find out the way the cyborg has been used by the other soldiers, by previous handlers. That he's dirty. That he's used.
But eventually, they do grow closer, and their handler realizes that none of this is 07's fault. That they've been used, that they just create war. None of it is 07's fault.
Realistic:
I actually really only have a character lol, so this one has no storyline. Just know that the character has just gone through a lot of abuse and stuff in his life.
I'd honestly prefer the sci-fi one, but it's up to you