"If only there had been time to ask...but I was fading fast."

One of her regrets. There are many. Mami folds her hands in front of her as hse thinks.

"Witches are...magical beings born from curses, who set out to hurt people. They draw on feelings of loneliness and despair and lure people into an invisible trap...ordinary humans can't see the witch or their barrier, so to them it just looks like they're walking like zombies in a fog. The witch then tries to kill them. It's my job to kill the witch as quickly as possible, and when they die they drop a grief seed, the shell of the core that their power came from. Empty grief seeds can be held up to soul gems to clear away the impurities, but only once or twice---adding too much dark magic to it will revive the witch."