I would like to introduce my favorite manga to you.
The comic is named 7SEEDS.
When astronomers predict that the Earth will be hit by a meteorite, the world leaders meet to develop a plan for human survival called the Seven Seeds project.
Each country will keep a number of healthy young people in a freezer, which will allow them to survive the devastation of the impact. After a computer determines that Earth is once again safe for human life, it will thaw each group.
The Japanese government creates five groups of survivors named Team-Winter, Team-Spring, Team-Summer A, Team-Summer B, and Team-Fall. Each group consists of seven members, who are not told about what will happen before they are put in a freezer, and one adult guide who is trained in wilderness survival.(excerpt from wiki :P)
The story start from each group are thawed and wake up the dark place where is human extinction world. They totally don’t understand what happen themselves.
This is very interesting sory and a suggestive one for our world, isn’t it?