A young girl—Chloe La Forêt—is alone and unconscious in the Corpse Forest. Well, it's too bad. At least the monsters will finish her off within a few days. Except this girl gets rescued in the nick of time. And the man who finds her? He's her new boss, Alchemist Kurakazu Rintarou. Chloe has a knack for cleaning and thus becomes his housekeeper. But she quickly reveals another hidden talent of hers—necromancy! Watch as this story of science and fiction unfold under one roof.

Terror and darkness have blanketed the world all because the Earth has become a hunting ground for zombies and mutants. But luckily, for Zhao Tianlei, he's accidentally obtained a mysterious super system that grants incredible powers to those who use it. Now, Zhao's no saint. But after witnessing the death of his classmates and watching tragedy unfold, he can't just stand by and do nothing. Will he find the strength to lead mankind in a fight against the undead on a global scale and restore human civilization?

Anezaki Satoru had a precious childhood friend, Ichinose Yuna, who was killed by a gang of rapists. Blinded by rage and thirst for revenge, Satoru gruesomely murdered 15 rapists and cut off their genitals, for which he was sentenced to capital punishment. After his death, Satoru regains consciousness in another world where all men have become mindless beasts. Finding himself lost in this world, he meets some of the struggling survivors fighting the hordes of beasts. What he learns is shocking... Yuna is apparently still alive in this world! Satoru chooses to join the fight in order to find his precious friend.