One Christmas Eve night, two old friends reunite in a certain church. Their paths may have strayed, but the story of how they were reunited will prove to be fantastical, touching the lives of many couples along the way.
In this direct continuation of "Ef: The Latter Tale.", Yuu tells the tale of a young woman who has lost one of her eyes due to an accident, but who may have lost so much more beneath the surface.
Following the events of "ef - the latter tale," Yuuko returns to Otowa in her old friends' dreams to take out the monsters known as "KILLJOYs" which force nightmares upon happy couples.