Rika likes Brianna a lot! Rika has a strong preference for girls who have gone through bad stuff and come out the stronger for it, and Brianna strikes her as the type. She's... huh, that's weird. She reminds her a lot of Satoko, her best friend back home, but oddly I think in this case, this has lead Rika to be a little standoffish. I suspect that it has to do with the fact that she knew Satoko since she really was the same age as her, while with Brianna she's always had her "I am different from the rest of humanity" mindset up.

But I digress, sort of. She enjoys being around Brianna, but in a way that makes it hard for actual friendship to penetrate.