What's a Witch?.Escha and Logy meet Linca, a swordswoman who is Marion's close friend and bodyguard. Later, they are tasked to provide assistance to a nearby village to the north of Colset, which is short on water due to pollution. While waiting for the town's transport balloon, their only efficient means of transport, to be repaired, Escha purchases an alchemical book from new shopkeeper Katla Larchika, which contains instructions on how to create the Bottle of Purity, a medicine that can remove every kind of contamination from water...