Aru Zombie Shoujo no Sainan

Five college students break into the library storage on a steamy July day in search of hidden treasure. They discover two groups of female ancient Italian mummies that are between 14 and 20 years old. The "stone of life," which granted the mummies incredible strength and endless life, is extracted from the mummy by one of the students, Sayaka. After 100 years, the two mummy girls wake up and transform into zombies in order to recover their "stone of life," breaking their heads and consuming their flesh for strength. The pupils must discover a means to eliminate the zombie girls in order to escape. Will they have a chance to live?