There’s a small statue in the coffee shop Will works. 

Not sure what it would be but the choices are: a frog, a cup, or a pair of folded hands. 

He works there every other morning but can’t help but look at the statue though something makes him not touch. 

There’s a mixup and he works late one night, touches the statue, and it turns into a man who says he was cursed into the statue till his true love came to call. 

Will thinks he’s going crazy. 

But the man follows him home and is really kinda cute in a serial killerish sort of way. 

Then they live happily ever ever. 

Either Will would be a prison guard and Hannibal would be in solitary confinement or 

Will would have killed someone in a moment of passion (maybe an ex, their lover, a killer) and Hannibal would be intrigued by the blossoming murderer under his care. 

This would probably fit best with soulmate marks or even some type of “you touch and you know” type thing.  

They would of course end up escaping prison if it was a prison guard x prisoner or rule the prison if they shared a cell.