In a quiet park, Meimi encounters the sudden arrival of the demon Rococo, whose powerful strike separates a hidden force from within her. At the same time, Naoto’s stepsister Hikari returns from abroad and enrolls at his school, stirring quiet concern in his girlfriend Rika. Their private moment is interrupted when Misty Mei appears and takes Rika away, prompting the angel Luvriel to explain that only a new bond between Naoto and Hikari can bring forth the power needed to rescue her.