I had no idea this was possible in the game, but it is possible. I accidently stumbled upon this too. I was using my camera, and saw a feature I hadn't used, I found a toilet lol. I placed Kat on top of it, and got her to do the Relax action. She then sits on the toilet, cross legged LOL. Her expressions make it look like she's taking a dump or trying too. This is the funniest thing I've seen in this game! Pretty funny.
RedDevilDazzy2007 currently has 66,105 views spread across 537 videos for Gravity Rush 2. This game accounts for over 2 days of watchable video on his channel, roughly 5.60% of Gravity Rush 2 content that RedDevilDazzy2007 has uploaded to YouTube.