Natsu, Arashi and a few dozen others had gone to bed like any other night when they woke up... somewhere else. In this new post-apocalyptic future, mutated plants and animals lie in every direction and mankind is long extinct. Scientists of the past predicted that a meteorite would strike Earth and render the planet uninhabitable, so they devised a plan: they would cryogenically freeze five teams of young adults and have them revived by a computer when life is again sustainable. Seven people formed each team along with a guide specially trained to survive in the wild, and seven caches of supplies were left to be found. Together, the teams must try to survive in a new and hostile world, inadvertently finding the other survivors and clues to their circumstances along the way.
Recently the number of attempted suicides have increased dramatically, straining the health care system. To combat this problem, those who try to take their life are placed on a special island where they must live out their days, while the rest of the world believes them to be dead. Some respond by immediately committing suicide while others decide to try to live; but with no supplies doing so will be difficult. Now, this group of strangers must work together to survive on Suicide Island, or die trying.
What is the true survival? Is that hard to live in society? What is our purpouse in life? Just to wake up one day and find yourself far from the life you despised so much, fighting for surviving. This is the kind of situation the protagonist are fated to in these manga, where skill, nakama and the will to go forward is what matters the most.
Both manga are well written and have and interesting set of characters whom many of us can relate to one way or another. They are able to adapt and perhaps become better people than the were in the past. Both manga have a "lets live today and look forward to the future" theme. I would highly recomend either to anyone who enjoys realistic portrails of human behavior in harsh conditions.
After being diagnosed with a mysterious disease, Honoka Kusakabe was put into cryostasis by the scientist Heitarou, her father. However, when she awakens it is not to her family’s loving arms – she is greeted instead by a barren world filled with vegetation and not a single human in sight, save for a dog-like robot named Haco. With his help, Honoka learns about the new world around her and searches for the answers she seeks.
Though 7 Seeds is far more dark and serious, both it and Haco feature a character who was put into cryostasis, only to wake up later to a much different, much less populated world.
Medusa is a mysterious illness which causes the body to petrify shortly after infection, found throughout the world and steadily increasing the death toll. After losing his son to the disease, a wealthy gentleman used a large portion of his fortune to turn his medieval castle into a state of the art cryogenic facility. 160 lottery winners were chosen to be frozen until a cure could be found, one of whom is Kasumi - a twin whose sibling was not one of the chosen. Along with a group of others Kasumi awakens from her cryogenic chamber, but not to the same world she left it: prehistoric monsters roam the now-abandoned castle and eat the survivors, while endless giant thorns rise all around them. Against all odds, Kasumi and the others must now try to survive the horror of their situation and discover the truth behind what's happening, all the while waiting for the Medusa to finally claim their lives...
It would be impossible not to recommend these two manga for each other, though I consider King of Thorn the far superior product. Both involve cryogenically frozen people who wake up in a very unfamiliar and very messed up place, and must now struggle to survive against all odds. Both are horror, and both are good matches for each other.