Wasteland, I Rely on Dreams to Survive

The world collapsed and cities turned into wasteland. The remaining humans are robbing the few resources, but Valen can harvest resources through dreams. However, Valen gained nothing from this dream. All he saw was a woman with a big sword cutting herself off. When he woke up again, a girl was accusing Valen of imprisoning the girl. "Although, I don't know what's going on. But we don't have much food. Hurry up and light a fire for me!"