Oho, Arturia is awesome and Ryner will love her. His partner in canon is also a badass blonde swordswoman, although she talks about dango more than honor or valor. Still, Ryner will likely love her on sight just because.

(I also have an Iskander muse that I never really play, woe. But yes, kudos on character choice!)

the only reason Ryner's dumb self hasn't gotten the boot as an enforcer is because his bff/boyfriend thing is his commanding officer, so yeah. They could likely bond over that, although I'm pretty sure Arturia is going to find him super annoying xD