Rosa recounts how she met the human Beatrice confined in a hidden mansion, Kuwadorian, on the island twenty years ago and helped her escape, only to see her accidentally fall off a cliff to her death. Beatrice confirms to Battler that she truly died as a human, and that there are currently no more than 18 people on the island, forcing Battler to accept his loved ones as possible culprits. Genji, Shannon, and Kanon are later summoned to Kinzo's study, where they see Beatrice offer him as a sacrifice and kill him. Kanon is pit against the seven Sisters of Purgatory, defeating Lucifer in a duel, though he and Shannon are overwhelmed as they try to fend them all off at once, prompting Genji to euthanize Shannon and Kanon before he is put to rest by Ronove. The Sisters search the mansion for more sacrifices, killing Gohda in the process. They find Kumasawa as well, who claims to have been waiting for Beatrice. Beatrice reveals Kumasawa to be her predecessor and teacher, the former Beatrice.

Eva is discovered by Rosa and leaves to discuss how Kinzo's gold should be divided among the siblings. The young Eva, however, refuses to share the gold and remains behind, declaring herself to be the head of the Ushiromiya family. Acknowledging the young Eva's achievement, Beatrice appears and dubs her the new "Beatrice", whom Battler deems to be an alter ego for the real Eva. Later, Eva falls ill, and Rosa takes a whining Maria outside to spare Eva from her tantrum. They are suddenly attacked by Eva-Beatrice, who repeatedly kills and resurrects them in bizarre ways. Beatrice takes pleasure in the scene, but ends up enraging Battler, who refuses to play with her any longer. Dejected, Beatrice confronts Eva-Beatrice and mercifully kills Rosa and Maria once and for all, ordering her successor to act more dignified and reasonable in the future.

Between 1986 and 1998, Ange leads a harsh, isolated life at St. Lucia Academy, a boarding school Eva sent her to. Between classes, Ange learns about magic from Maria, whose soul is kept alive in her old diary. Maria shows Ange how she was often left at home by Rosa and forced to care for herself with Sakutaro, a stuffed lion doll Rosa made her for her birthday who was brought to life by Maria. In 1998, Ange discovers that she is being hunted for her fortune by her aunt Kasumi, Kyrie's sister, and escapes with assistance from her bodyguard, Amakusa. She begins her journey to Rokkenjima, where she enters Purgatory and becomes Battler's ally against Beatrice under the name "Gretel". To make things more fair for Battler, Ange convinces Beatrice to let Battler use blue text for when he makes his theories. During the family conference in 1986, Kyrie theorizes that Kinzo is already dead, which is why none of them except for Krauss and Natsuhi have supposedly seen him, and that there are actually seventeen people on the island. Battler adopts this theory and states it in blue, but after Krauss and Natsuhi are sent by Kyrie to prove that Kinzo is alive, Kinzo agrees to attend the family conference and settle the argument himself.