I think Fu would like Kadowaki, as she seems like a business-minded lady. She wouldn't punch Edgar for flirting, but mostly because she wouldn't realize he was flirting. I think she would avoid Gunnar because he seems altogether too casual. And off the top of my head, I think she'd favor Vivi. It would be very sneaky, cause she doesn't want to seem like a softy, but he would warm her heart.