Gestalt 

An ego-centric and heartless boy who seeks excitement in his boring days, the hero Sousou. A high school girl with a sense of justice, who reaches out to anyone within a 3m reach, Hanami. One day, men and women from all over the world come together for the beginning of the end of humanity───. The pair are brought to the "Ark" and selected as the new faces of humanity by the "concierge", who tells them they will simultaneously reset all of humanity. The selected must now "select" among themselves; the horrifying survival and catastrophe begins.