At first I'm searching for stories where a city, country or the whole world were destroyed and some people who are still alive try their best to survive like 7 Seeds. I also accept simple survival mangas where people where involve in an accident at the nowhere and are waiting for rescue or anything else. For example Limit and Suicide Island.
Then I want mangas about worlds end. It should start normally where I can follow the main charackters daily life but then they realize the end is near and try to prevent it or to get out of this nightmare. I want a story where the world finally is REALLY ruined at the end. I'm searching sth like Saikano , Wolf's Rain or X. I don't mind if a few survive like my first request but the world destruction should really happen like the US movie "I am Legend" with Will Smith shows. So it also can be about a virus which impend to kill all life on earth like Emerging.
Other examples : Kanojo o Mamoru 51 no Houhou , Coppelion , Dragon Head
and can anyone tell me if these also fit my description? : Island and Hotel
Hope you can help me finding more of them. Any genre is fine but please no shounen-ai or yaoi. Suggestions for animes or movies are also welcome
I prefer if they try to survive with their own hands and without guns. I really love 
