Young Swordsmen in the Ruined City

In a city overrun by hordes of zombies, a red-haired girl and two boys rise to fight. Her sharp sword, his massive blade, and mechanical fists create a blue barrier, slashing through the night of despair. Their once peaceful daily life is gone, awakening unknown powers to protect their family. Will hope dawn at the end of this battle? As the city's clock tower silently ticks, the adventure begins.