Conception Maiden

A boy named Minori is awoken from cold sleep(cryostasis) by a mother and her daughter, only to find that a deadly virus wiped out most of humanity, and that the 3 of them are the last living humans on earth (with the exception of an unknown number of other people in cold-sleep pods). The world is also overrunned by "cross-breeds", deadly parasitic life-forms. With just the 3 of them left, humanity faces complete extinction.​