They took Luvriel injured in the battle against the devil. There, Luvriel told them the surprising things; angles in Heaven and devils in Hell have been fighting for a long time, and the devil would attack them again. Because Luvriel had lost her power during the fight, she asked Rika fight for her. On the other hand, the devil had lost his power in the fight. Then, Otonashi Meimi, who was a classmate of Naoto, happened to come and see Naoto confess his love to Rika, and she became jealous. Taking advantage of her jealous, he haunted her. He made Meimi into an evil heroine, Misty, and made her attack Rika again. On the other hand, Luvriel turned Rika into Sei Tenshi Djibril and let her fight against them.

Otonashi Meimi is walking alone in an empty park when the demon Rococo suddenly appears. Rococo uses her Eternal Arm attack on Meimi in order to separate the power of Misty Mei from within her body. Meanwhile, at Naoto's house, Hikari, Naoto's stepsister who was studying abroad, returns home. She starts going to the same school as Naoto, and it worries Rika, Naoto's lover, a little. "I love you the most in the world." - With these words, Naoto makes love with Rika in the school nurse's office. However, Misty Mei appears and spirits Rika away. Then, the angel Luvriel appears saying that Naoto has no choice but to have sex with Hikari so that a new Jibril can be born to save Rika.

The peace following the previous story is short-lived, with a strange new photography student taking pornographic pictures of some of the students, something connected to the return of Misty May. When a more powerful monster than they've ever faced before attacks them, Hikari Jinno is abducted, and the New Angelic Gaia Interface is activated, in the form of a blue-haired virtual girl named Nagi... Can the N.A.G.I rescue Hikari... or is it too late already?