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 protagonist is a female high school student, Suzuka Suzuki, the blockade is a high school student, and the blocked escape is a mystery, and the mysterious unconfirmed life form "X" (サイ) is a mystery.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...! ?