Description:

Most of humanity has been wiped out by mysterious dark monsters known only as "Phantoms." Four survivors, who may well be the last of the human race, have found one another and are sharing a quiet, peaceful existence. These survivors are a kind, dependable teenage boy called Masashi, two teenage girls, shyer Sanae and bolder Yaeko, and a little girl called Anna. They feel as though they're just living in a perpetual "after school" state, waiting for the rest of the human race to come home. As they pass their days together, they begin to see some strange things and find that the monsters have not yet left the Earth. Will they discover what really happened to their planet? (Source: MangaHelpers)

Description:

In the year 2040, Japan has advanced technologically to the point of no longer needing people to work. However the cure for some diseases, such as multiple sclerosis, has not been discovered—people who have this disease have to stay cryogenized for 5 years to receive the cure. What was not expected when they woke up, was that they are the only hope for humanity to survive.