Ikinokotta 6-nin ni Yoru to

It all started with a plane landing at Narita Airport. A single passenger carried a mysterious virus, and before anybody knew it, this infection had become widespread! Responding to this crisis, the national government decided to blockade the borders of Chiba Prefecture. Within a town overrun by zombies, six people take refuge in a shopping mall in Makuhari. Having obtained food and safety, these survivors...hopelessly fall in love?!

(Source: Yen Press)