School-Live, v. 1 by Sadoru Chiba & Norimitsu Kaihou

Meet the members of the School Live Club!  There's shovel-loving Kurumi, big sister figure Yuuri, club advisor Megumi, and ever optimistic Yuki.  They're just your average after-school organization where the girls hang out, have fun . . . and live at school as the sole survivors of a zombie apocalypse.

This manga series definitely follows the dystopian trend of high school students surviving an apocalypse.  In this case, it is four girls trying to survive at their school after everyone else has been turned into zombies.  The first volume introduces the characters and their personalities.  It gives hints as to what has happened without revealing anything.  This would be a great series for those who like zombies, dystopian, or school stories.