[Hijikata's frown at the first part gradually eases into the faintest little grin. He knows this kind of stubborn determination to see the good in even rotten people. Kondou is like that, and that goddamn perm head Gintoki too, even if he doesn't exactly wear it on his sleeve.]

Alright then. Beat the snot out of her if you have to, if that's what it takes for her to see that you still believe in her.

[This would probably sound counterproductive to most people, but, the Shinsengumi have punched each other back on the right path before and will probably do so again.]

Now fix up Muramasha for me so I can take of any shadow minions she may summon to keep you away.

[He knows his role as a supporting character! But seriously, he simply can't help but want Darin to succeed. While Hijikata can have a morose outlook on people's nature at times it's idealistic people who keep their faith in others who make the world - any world - a worthwhile place, so he'll add his strength to their efforts.]