Highschool of the dead color omnibus, vol. 2 (Little, Brown Book Group)

Takashi and his fellow students join up with a band of survivors who have barricaded themselves inside a local mall. Though the shopping center seems a well-stocked place to hide from the undead lurking outside, the policewoman in charge is having a hard time maintaining peace within. As the mall refugees grow restless, Takashi and his comrades make plans to leave before Officer Asami's authority slides further and the group's order is completely undone. Unfortunately, just as final preparations for their departure are nearly complete, the mall's defenses are breached, and "they" come streaming in. Their fortress has become a trap - can anyone hope to escape the mall of the dead?!