>>43628585She talks about enjoying incest anime and manga in Members streams but also some PL streams you can look up if you know. She likes the idea of two people that really know each other like family having a love and passion that is so strong it goes beyond all boundaries, saying it's hot.
It still comes across sometimes too, like during the recent genderswap stream where she got to play her "brother" and do some Siscon roleplay.
I'm surprised you weren't aware.
