Apocalypse: High School Fortress

[Not a Holy Mother + Many Children and Many Blessings Dual Cultivation System + Zombie School + Realistic Game] Protagonist's resume: Adopts a 6-year-old horror loli, loves the cause of saving beautiful girls, is in charge of public order and good customs in the girls' dormitory, and takes it as his own responsibility to build the second-rate middle school into the world's number one fortress. Anyone who enters our base will automatically be immune to corpse poison, and anyone who violates our base will be killed.