Senran Kagura's Yagyuu. She'd start off as a Myrmidon and can switch to Swordmaster, Trickster, Assassin, and special class involving summoning squids to attack...and an expert in Parasoul-fu! with her umbrella weapon. I basically chose this for the whole sword plus avoid+ bonus and such.
In regards to interactions, a part of me thinks that Cynthia would find her cool and want to hang out with her. Owain would be like "A suitable rival. NO! Sword hand, down!" Those are the only ones that I can think of off the top of my head.
warrior of light would probably be a mercenery-line hero just because i don't think other classes fit as a starting class and would have the ability to class change into the thief, strategist, bishop, and dark mage lines (to reference 4 out of the other 5 jobs in the original final fantasy, cant think of one for the black belt). and also the fighter line (blatantly obvious reference)
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