A nightmare that almost killed me

dark world. Human beings are withering, the sky is raining with blood, the nightmare continues, the past is still unknown, the future is fading as a companion to it, and the papers of that book still fluctuate and myths come true that they are "nightmares." In fact, the reason for mutsuki is 16 years old. His father and sister died. He lives with his mother in one of the villages. But what happened to him was shocking, every nightmare he dreams turns into reality and fades away everyone around him, so will the day come when he will be forever alone?