Louise's Change of Heart.Louise continues her lovey-dovey behavior towards Saito, which freaks him out, as well as causes a misunderstanding with Siesta. In desperation, Saito demands that Montmorency create an antidote, but she refuses to help until he blackmails her into helping (Saito learned from Siesta that emotion-changing potions are illegal). As the antidote requires "the tear of a water elemental", Montmorency and Guiche lead Saito and the love-struck Louise to Lagdorian Lake where they make contact with the Water Spirit who is flooding the land so that she can search for her stolen precious treasure but she is being hindered by magic users...