Virtual reality. Murder. Werewolves. And teen girls! In a future where nothing is as it seems, can old legends come true? In the near future, humans will communicate almost exclusively through monitors, making real interaction a rarefied and weak occurrence for those living in a near totalitarian society. In this new world of communication, children are only allowed to interact personally on school grounds. So when a serial killer starts slaughtering junior high children the communication routes go under further surveillance. And despite all the safeguards put in place to avoid physical interaction, the killer's latest victim turns out to have been in contact with three young girls: Tsuzki Mio, a certified prodigy; Matsuno Hatsuki, a quiet but opinionated classmate; and Kouno Ayumi, her best friend. And as the girls get caught up in trying to quell curiosity under such terrorist scrutiny, Hatsuki learns that there is much more than meets the eye of their monitored communications.

One day, Mana Aida receives a wedding dress from her mother and grandmother that they had worn in the past. While thinking about who she would wear this beside someday, a mysterious man named Marsh appears, and Mana is thrown back into the past. She was happy to see her grandmother she loved and her old dog Maro, but she then realizes that Alice and Rikka aren't there because memories have been altered. In order to save precious memories, the future, dreams and hope, Mana transforms into Cure Heart.

Kasahara Iku and Dojo Atsushi receive an emergency recall in the middle of their date as Japan is rocked by a terror attack. Their new duty is a protection detail assigned to Touma Kurato, an author. Meanwhile, the relationship between Librarians and the Media Purity Committee is also worsening. During yet another hostile confrontation, Dojo is seriously wounded. Although Kasahara is badly flustered by this turn of events, Dojo still sees fit to entrust her with Touma's protection.

Denji is a young man who makes a pact with a demon and ends up working as a Devil Hunter hunting devils.