I really liked Frank's reaction to Matt's 'Maybe this once we do it your way'. He knows killing is a huge line for Matt and he sounded like he didn't want Matt to cross it because he knew Matt would struggle with it.

So maybe Fisk has gotten out of prison and is up to his usual things and Matt goes to confront him, determined to kill him this time. And Frank follows him and when things inevitably go to shit, he shoots Fisk. Better on his conscience than on the choirboy's.

"Shit Red, it won't keep me up at night"

Matt is... idk, angry but also really relieved? Up to you, though I'd like it to involve some appreciation

I'd prefer no shipping in this one