A virus spreads across the world, transforming all humankind into wild, slavering, furry beasts: cats, to be precise. Those few survivors who remain human take refuge in the dark corners of the earth as they fight back against the feline horde. Kunagi, a man with no memory of his past yet a deep knowledge of cats, struggles to hold on with only his wits and a will to survive. Yet the virus transmits merely through cuddles, and Kunagi finds kitties so hard to resist! Is his willpower strong...

Kunagi, Jones, and Kaoru have set out to try to find out more about Kunagi's past and cure his amnesia. After they help a young girl named Lily, the crew are invited to spend the night in her village. Things take a turn for the strange when they discover that the entire village worships cats!

The city is overrun by adorable fluffy disease vectors that used to be human...and they want cuddles! Now, with Tsutsumi's allergies as a cat detector, Kunagi is striving to keep his small band of survivors from going feline. But when a peculiar white kitty with a large jewel produces an earsplitting screech, all the cats in the city converge on their location! When their cat energy merges into a massive mystical cat beast, will Kunagi be able to draw it away?

Kunagi and company manage to return home with their new friend, the super-intelligent cat Jones. Everyone's happy to have a cat to dote on! However, the good times don't last as a new threat soon emerges when the base is attacked by a horde of animals being controlled by cats! Can humanity survive?!

After an adorable apocalyptic event nearly turned every human into cats, the survivors struggle to survive and resist turning into kitties themselves! Kunagi and Kaoru set out on a rescue mission, hoping to free some fellow survivors under siege at a local shopping mall. Once there they meet a new ally: a super intelligent Devon Rex!

After the cats launched their oh-so-adorable co-ordinated attack, the human's base of operations has fallen. Kunagi is knocked out and comes to only to discover that his comrades have been turned into cuddly kitties! Are there any other humans left, or has the world truly gone to the cats?!

The world has fallen under the long shadow of a cat apocalypse. Mankind has been overwhelmed by the power of their fearsome floof, turning into cats one after another. Those few survivors who remain live in a world on the precipice of total collapse. In a new age where cats are everything, is there any future for what's left of mankind?! The absurd tale of kitty-cat armageddon continues!