In a “ruined world” begins the adventures of two girls. A girl who because of some special circumstances was branded a “witch”, Yuki Minato. Even now that she’s in high school, her dark days are still not over. But on the second day of school, the world ended. The streets are now filled with lifeless beings, moving corpses, as humanity’s end approaches. A month later, Yuki managed to survive with a familiar and “magic” left by her missing father,. One day, to replenish supplies, She went into the streets filled with moving corpses. On her way back, she heard a gunshot. Even though right now there’s no one in town that’s worth saving, in the past there was a kind girl she was close to. Remembering that girl, Minato decides to help the owner of the gun shot. When she arrives, in front of her was that girl, Honoka Sakaki. For Honoka’s goal, the two decided to work together, but…