Gakkou Gurashi!

SCHOOL-LIVE! Focuses on the lives of 4 girls who decide to stay over at school: Yuki Takeya, Kurumi Ebisuzawa, Yuri Wakasa, and Miki Naoki. Along with the school adviser Megumi Sakura, they suddenly find themselves to be the final survivors of a zombie attack, and continue to live and survive at the school. (Source: Crunchyroll)