Their interaction in the series always gave me the gay vibe.
And Saori with all her "I'm mentioned that I'm heterosexual today?" give me a big gay vibe too.
Oh jeez I know exactly which scene this is! It's from chapter 2 of Gravity Rush 2 when Raven visits Kat after fainting.
These two have so much subtext in the second game, it's not even debatable.