Kyōko Kyōkai is a Japanese 3rd Year Student in college about to face the biggest challenge yet: How to spend the last four months of her life before the world ends!?!!

Accompanied by her boyfriend from America turned Japanese resident, Pietro, her college friends from the Liberal Arts, Hanami, Horo, and Reimi, and Reimi's Grandfather, Tato, these group of people would come face-to-face with the fact that life is just another extinction event!