The Episode starts and plays out just as the manga.
Kei Kurono is a self centered and uncaring highschool student. And the day he meets up with an old friend at a train station his world is turned upside down. Thrown into a white clad room after apparently "dying" along with his friend Masaru Kato they meet up with more individuals who have "died". When suddenly the large black ball in the back of the room begins to play music....