I'm a MASSIVE fan of IRyS!
The way she's like a princess that was locked up in a tower with the only view of the outside world through anime and Manga has made the utmost unpredictable girl I've ever seen.
She's a joy to watch while I work and her streams are long enough I could finish around the same time she does! (Either that or she just keeps going, the mad lass)
I also love how brave and persistent she is in horror games. And that she pays attention to the logs and other stuff that really completes the atmosphere. So her streams never feel like a cheap gimmick for easy screams.
If anything, her YabaiRys "gimmick" is primarily what keeps you on your toes because you have no idea what comes out of that girl's mouth next!
To top all of this is the healthy relationship with Bae. To me, it makes me less worried about others being too parasocial about her like the other talents, because she's got her wife that we all root for.
Also, Till the End of Me is an absolutely amazing song!