A person who had lost all attachment to life chose to end it of their own accord. But the world gave him a second chance, one that still came with danger. Would he abandon his responsibilities and simply live, or accept the burden of protecting another world?
The characters in this story come from different countries. Each had their own reasons for losing their attachment to life and choosing to end it. They thought it was all over, but then found themselves in another world, one with highly advanced technology, kind and simple people, and a population that did not even age. But this world was constantly under attack by monsters. To fight them and protect the people, the Sweepers were formed.
The protagonist is one of these Sweepers. Here, he meets all kinds of people and makes friends who help him overcome his psychological scars.
