Garakuta no Mori no Eden nite

A world that lost 70% of its land because of 'The Collapse'. Eva, a boy that lost part of his memory from before the world's collapse in a forest of junk in a small island, collecting things that had drifted ashore from other islands that had sunk during 'The Collapse', he passed calm days with a young swordsman Alivio. After one day, Eva regains his past memories with his once best friend 'he'. This is a story about a boy and a young man living in a heartwarming way in a world after the Collapse, seriously going through memories. Though it seems to have elements similar to exploration, it is basically a linear novel that you can only read.