The Heartstone of Good glows when good feelings are experienced all around the world. It can glow even brighter when good feelings grow even stronger. Goodness. Kindness. Love. Romance. Friendship. Beauty. All of it. But its glow weakens when it's being threatened by yanderes, who only crave for the desire of their one true love. Its glow weakens until the stone dies down and becomes nothing but ash. Can the characters keep on living and keep showing all good feelings to purify the world and wipe it clean of lust and obsession?