My dude, if I could find a good match for Haruka I would have made it already. Really wish I could help you here, but I've had trouble coming up with matches for SK characters myself. If anything comes to mind I'll let you know but 8-B is kind of a rare tier unfortunately. I wish you the best of luck, though! It'll be nice to have someone other than myself making SK matches :)
Also if you get a chance I would love your vote on this match
Also I don't know if you have actually played any SK or watched the anime but the shinobi barriers act like the technique in Doctor Strange where what happens in that area doesn't affect the real world. If that is pocket reality stuff then sweet. If you haven't seen Doctor Strange then Idk what other comparison to make.