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Panic spreads worldwide as the Medousa Virus threatens to wipe out the human race. Kasumi is one of 160 people chosen to be cryogenically frozen while a cure is found. When she awakens to find the facility overrun with thorny vines and ravenous monsters, Kasumi and six others struggle to survive this labyrinthine nightmare. If they survive, how long do they have to live?
Alternative Titles: Ibara no Ou, Ibara no Oh, いばらの王