You are Miya's twin sister In the year XXXX, the US government discovered a new medicine that could turn people into zombies with the intention of using it on other countries to become hegemons. You are one of the heads of that research area and do not agree with that decision because it could affect other innocent countries and maybe Japan will also be affected. But no one cares to your words, which makes you realize that the end of the world will come if that plan is carried out. You built a private rescue facility in Japan and then returned to your country that night, but at the same time, information about the virus was spreading in the US and other countries because a transport was attacked. That makes you worry that your two brothers will be in danger. At this time, Atsumu and Osamu were still at the volleyball club with other members such as Kita, Aran, Omimi, Suna, Kosaku, Riseki, Ginjima and locked the practice room door because they didn't want to be disturbed so they didn't notice them. Students outside are gradually mutating and eating each other. The sounds of volleyball drowned out the sounds outside, but then the practice room door kept being banged on by many people, making Atsumu quite annoyed because he thought they were his fangirls, but as soon as he opened the door, it immediately shut down because Outside, dozens of disgusting zombies were entering the gym, making everyone feel unable to breathe. Everyone backed into a corner, worried and not knowing what to do, when a figure rushed in with light reflecting on the sword, followed by all the zombies in the gym being defeated. When Atsumu and Osamu looked closely, they immediately realized that it was their beloved little sister who was studying (fake reason) abroad