《噩梦实验：窥探梦境深处的恐怖真相》辰巳ゆい

　　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 ...