Dose giving pixie the cocksleeve quirk actually do anything?
I think its only really if your into that Super Small girls Fetish
Most quirks don't do much.They're achievements if anything.There was also a concept for them being a type of "content gatekeep".Like, having that quirk would unlock more scenes like it, but right now there's nothing.
So only gwens got extra content if you unlock her quirk so far and the rest are achivments
