“Any idea why we lost our memories?"
Medb questioned the village chief with her Charm. He answered immediately.
“It must have been the oblivion water. Deep into the mountain dividing the two villages… there’s a divine spring. We visit it to receive our share whenever we need the water to save us. For example, when we need to relieve a deathly ill villager from their misery.”

- Chaldea Case Files: Caged Girls