 In the second game, and it's related anime, Hikari Jinno, his sister who was studying overseas, comes to visit, at the same time as Rococo, Asmodeus's sister, decides to attack Rika in revenge for Asmodeus's defeat, turning her into a demonic version of a Devil Angel, causing Hikari to end up a Devil Angel, with Naoto slightly more reluctantly, at first, generating Amore within her, and they manage to purify Rika and defeat Rococo.In the third game, Naoto finds himself helping test out the New Angelic Gaia Interface, in the form of a blue haired girl, when a new antagonist, pretending to be a photography student, lures Rika and Hikari into a trap that sees Hikari corrupted and Rika unable to help.Due to NAGI's digital nature, she is able to regenerate from damage and take greater risks, which is needed when the demons deploy the first completely robotic devil...