When a black-haired woman woke up at strange place, she has lost her own memories. Nona, a mysterious white-haired girl tells her that the woman has to assist Decim in his work.
A male university student woke up at Quindecim. Although he is given an explanation of the situation from Decim, he falls in love with a female opponent at first sight.
When she has to play the game, a female TV celebrity expects that a reality-show is taken. She wants an opposite guy to cooperate for more interesting.
Mayu, a girl arrived Viginti, a Japanese style bar attended by the red-haired Ginti. She is glad to be able to play the game with Harada, her favorite idol.
Men knew their circumstances with each other, and all memories come back to their mind little by little. The black-haired woman persuades Decim to stop the game, when she learns their memories.
