>>2966743Definitely her full Demon Queen form, which she has teased since way back with her original lore video when she joined VShojo.
https://youtu.be/qEJAwBWD5voSo this has been in the works for a LONG time. She refers to her original model as Season 0 (aka BabyMouse), the model she used after that until January as Season 1, and the current one she has as Season 2. Demon Queen form is the OAV form.