Now that the sealing is complete, it's time to think about what's next. We learn that all the siblings were raised by their big sister, yue, and they've decided that if something happens to the clan, they'll sacrifice their tails so that the big sis can't become a sinner of the clan. They've also decided that they're going to sacrifice their own tails in case of a crisis, so that if they ever need help, they won't have to stand around and watch their big sis turn into a sinner for the fox clan.