Neverness to Everness just made its witch NPC playable.
Blackbird, voiced by Mamiko Noto, is live on the limited board. A hands-on preview says she stacks resentment, then dumps it after she transforms.
Unlike Scarlet, that form stays on if you swap her out. Out of combat she turns into a bird and flies the city.
The kit is built for a game that wants you swapping, not camping one character.