梦中惊醒，噩梦缠身，无法逃。学长的手指在里面转动 嗯 写作业

　　In the main character, under mysterious circumstances, the brother dies. The girl begins to pursue realistic nightmares, and she goes to the Institute of Somnology, where she and other patients are immersed in a joint lucid dream. But after dawn, they will wake up in a completely different reality, which is worse than any nightmare ...