JK of ・ the・ Dead

One day, the city is suddenly transformed into a world where zombies roam. In the midst of this situation, the surviving high school girls, in a corner of an abandoned high school, survive their hunger and boredom with what little food they have left and "mahjong tiles"... But the only entertainment they have in this world, mahjong, turns out to be a disaster...! The girls use the game of mahjong to make their choices.