Shinsekai yori, Shoujo Shuumatsu Ryokou Recommendations
Both are set in apocalyptic settings, Shinsekai Yori is just further past the destruction. They focus on children learning about the world and gradually uncovering it's mysteries. Shoujo Shuumatsu Ryoukou focuses much more on the day to day life of the main characters, and Shinsekai Yori is a bit more action-focused, but both contain wonderful settings and captivating stories.
Both stories although they are different in their own arguments and plot, are built under the same premise, the extinction, but not the extinction of the Human species, but of Humanity, that concept that makes us different from animals, this term is not emphasized in each part of the story, if you liked Shoujo Shuumatsu Ryouko, then you will love the apocalyptic contexts and the distorted lines of a story that aims and manages to immerse you in an oniric world 1000 years in the future of humanity and planet Earth.
Although SSR is an anime that does not try to answer the question, what