How would you psychologically break Shizuo? (This is a serious question here for a plot point.)
NOT AT ALL BC HE DESERVES HAPPINESS but i get your point
His greatest weakness is his fear of his strength. He’s scared to hurt people he loves and would probably never be able to forgive himself if he snapped and injured someone really close to him, i.e. his brother, Celty or Tom, for example.
He’d probably also be devastated to find out he’s scared someone who initially trusted him, maybe even looked up to and loved him. He’d understand why they’d fear him, but it would damage him a lot and put him into a spiral of self loathing.
Generally losing someone who’s close to him is horrible for him either way, no matter whether he’s responsible for it or not. Say if someone else hurt his family or friends he’d be furious just as well.










