Ibara no Ou: King of Thorn  

いばらの王 -King of Thorn-, King of Thorn

The world is in chaos due to the threat of the Medousa Virus, which could potentially eradicate humanity. Out of 160 individuals, Kasumi is among those who have been cryogenically frozen in hopes of finding a cure. However, when she wakes up, she discovers that the facility has been overrun by vines and monsters, creating a terrifying labyrinth. Along with six others, Kasumi must fight for survival in this nightmarish scenario. If they manage to make it through, how long will they have left to live?