The Eternal Phantom World.After the fight with Enigma Haruhiko has lost his ability to seal Phantoms. His mother remains unconscious in the Alayashiki hospital. Haruhiko meets his mothers new husband who gives Haruhiko a book from his childhood which she had cherished. Ruru has undergone a drastic personality change and is acting more like Haruhiko, i.e. polite, helpful and rather clumsy. It is suggested this is because Haruhiko no longer has powers and it has affected Ruru due to how close the two are. Elsewhere Koito is unable to track Enigma. Instead she goes to Haruhiko's house and demands he finish fixing the device from the warehouse as it can access the Alayashiki computers and possibly information on Enigma. Kurumi has Albrecht repair the device. They discover Alayashiki had been researching students abilities in order to artificially make Phantoms stronger for uses ranging from slave labor to disposable soldiers. One file focuses on Haruhiko and his relationship with Ruru. Enigma, the most powerful Phantom created, now hates humans. Enigma returns to Alayashiki Hospital searching for information. Haruhiko and the others are told by Himeno that Enigma wants data about Phantoms which she can combine with the Phantom summoning ability she stole from Haruhiko to summon and control all Phantoms and rule the world. Mai, Koito, and Reina fight Enigma who uses her stolen powers to easily defeat them. Haruhiko steps in and attempts to fight Enigma but is hurt while protecting Ruru. Himeno reveals that Ruru was created from Haruhiko's mind as an expression of the carefree part of his personality he had been repressing so she likely has the same powers Haruhiko does and Haruhiko can regain his powers by taking them from Ruru in the same way Enigma took them from him, with a kiss. After some hesitation Haruhiko and Ruru kiss, returning his summoning ability. It is revealed Enigma can only summon Phantoms Haruhiko had already defeated, whereas Haruhiko who has continued to improve, summons both the demons Cthulhu and Marchosias in their true, more powerful forms. They instantly defeat Enigma's summoned Phantoms and injure Enigma. Working together Haruhiko and his team manage to defeat Enigma who is happy humans are more complex than she first thought, and that she also enjoyed the time she spent with Haruhiko as his mother, before she disappears. Haruhiko happily sees Ruru has returned to her normal self. In the hospital Haruhiko's mother wakes up and they enjoy a tearful reunion. Alayashiki are investigated by the government. Every one of Enigma's victims regain their powers. Ruru is happy to learn she was once a part of Haruhiko and demands to be treated as his (older) twin sister in the future. Haruhiko realizes Ruru looks just like a character from the book his mother had kept. Life returns to normal and Haruhiko claims that even though the world tends to blur between fantasy and reality he rather likes it that way.