Lianghua's sleep in the day, the eye of the night, "the most beautiful girl in the world", "the most beautiful girl in the world"... Know the meaning of "Confinement Area" and "Confinement Area". The main character is a female high school student, Suzuka Suzuki, the blockade has been released, and the mystery of the unconfirmed life form "X" (サイ) has been revealed.ループするDespair in the way of survival を见出し, Lianghua は无事家のもとへ帰れるのか...! ?