When waiting for his girlfriend, Touka Miyashita, to arrive, Keiji Takeda sees a ragged-looking man stumbling through the town. A short man in a black cloak speaks with the other man after he collapses, then berates the crowd for not helping. When the police arrive, the two escape, but what shocked Takeda most of all was that the cloaked man has the face of his girlfriend. The following day, Miyashita acts as if nothing had happened the previous day. Takeda sought to speak with her after school, but instead spots the cloaked man. Confronting him, the stranger introduces himself as Boogiepop. Boogiepop claims to be a
split personality, who has emerged to protect the world. Boogiepop explains to Takeda that Miyashita is unaware of his existence, and would modify her memories to explain the blank periods. Boogiepop has appeared this time to face a man-eater hiding in the school. Through their discussions, the two come to accept each other, and become friends. In the end, Boogiepop appears to Takeda in Miyashita's school uniform, and explains that the crisis was over, so he would disappear. To the end, Takeda is sure that Boogiepop is merely Miyashita's repressed possibilities, rather than a monster-fighting hero. Kazuko Suema has an unusual interest:
criminal psychology. Despite this interest, she had little interest in the rumors the other girls talk about in class, about a
shinigami named Boogiepop. While walking home with her friend, Kyoko Kinoshita, Kinoshita is attacked by Nagi Kirima, The Fire Witch. Kirima interrogates her about something, but stops when she realizes that she had only caught a 'normal' person; a drug-user. Suema confronts Kirima about this, but was told to let go of the events of five years ago – but Suema had never told anyone about that! Unable to let things happen without her being aware of them again, Suema searches for Kirima's house, and confronts her. However, Kirima reveals little about what she is doing, and only tells her that Boogiepop had saved her five years ago. Masami Saotome joins a group date with Akiko Kusatsu. Late in the night, he drops a tablet into her drink; when she falls ill, he tells the others that he will get her home. Taking her to an abandoned building, he signals for Manticore to come; she turns the corpse into her loyal slave. Two months prior, Saotome had found the corpse of Yurihara at school, before himself being attacked by Manticore. Rather than panic or fight back, he told Manticore it would be better off leaving him alive and taking the form of Yurihara. In time, the two were deeply in love with each other, as they hatched their plan to conquer the world. As their experiments in controlling people begin to fail, and Nagi Kirima seems to be investigating too close, the relationship between Saotome and Manticore strains, until Naoko Kamikishiro came upon them, calling for Echoes. Manticore kills Kamikishiro, but for Saotome, this was the missing link: he has a plan to solve their problems. Akio Kimura receives a letter telling him that Naoko Kamikishiro was dead. Two years ago, when they were in High School, he met Kamikishiro when she was confessing her love to Shirou Tanaka. Returning to his hometown to investigate the origin of this letter, Kimura runs into Touka Miyashita. Miyashita tells him that he should get over the disappearance of Kamikishiro, but Kimura tells her that an alien had taken Kamikishiro into space with him. Kamikishiro had told Kimura that she had met an alien named Echoes, who had been sent to evaluate humanity, but he had been
cloned. His clone was now somewhere in their town, and he was looking to kill it before it killed the humans. As Kimura and Miyashita go their separate ways, Miyashita – but at the same time not Miyashita – tells him that Kamikishiro had "done her duty". Shirou Tanaka approaches Kei Niitoki about the disappearance of Naoko Kamikishiro. Masami Saotome suggests they ask Nagi Kirima, a friend of Kamikishiro. Unable to find her around the school, Saotome suggests summoning her over the school's
PA. Recognising a trap, Kirima cut the lights to the PA room, and knocked out the three students with a
stun gun. When they came to, they were presented to Echoes, who indicated that they were normal humans. After they were released by Echoes, Saotome stabbed him in the throat with a poison-filled mechanical pencil before Manticore attacked. Saotome then slashed Kirima's throat, killing her. By the time Niitoki comprehended the situation, Echoes was being defeated by Manticore. However, he points to the sky, and transforms into light. Echoes directs the beam of light towards Manticore, but Saotome intervenes; he just barely saves her, but was killed instead. Hoping to take this chance to escape, Niitoki runs, but Manticore pursues. Hearing someone whistling
Die Meistersinger von Nürnberg, she heads towards the sound. Niitoki trips, but Manticore becomes trapped in a wire. Niitoki's savior has the face of Touka Miyashita, but claims to be Boogiepop. While Manticore is trapped, Boogiepop calls for Tanaka to shoot it with an arrow; an arrow to the head finishes the creature. Finally, Kirima rises from the dead, apparently resurrected by Echoes as he left. ==Characters==