sentences:  The player controls a girl named Rei Hatada, who in order to revive her dead younger sister Mirai Hatada, makes a deal with twin demons of Purgatory, and the story progresses as the player fights the souls that drift about Purgatory.The concept of the game revolves around crying, which purifies new equipment to use.By defeating specific enemies, "Memoirs of the Dead," final thoughts of the dead, will appear, and crying will purify those thoughts and develop the protagonist mentally.