Zombie Apocalypse - Send Me Gatling at the Beginning

Parallel world, zombies destroy the world. Unbelievable? Bizarre? Could it be any more evil? Over a hundred years, zombies have formed a unique evolutionary system! Holding Gatling in my hand, I trembled, scared! Base system, base vehicle, base space. Come and save the apocalypse with me! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.