Atsushi Okada: 5 books

Three shady thugs show up in Nekonaki, and they're taking over the town one rough-and-tumble tom at a time! To top it all off, as Ryuusei and the crew sharpen their claws for the next brawl, they get an unexpected visit from Taiga's exiled brother--the furmidable fighter Raiga!

The ultimate cat showdown escalates until the Nekonaki felines find themselves embroiled in the power struggle. As Ryuusei and the gang attempt to tackle the root of the issue, Madara and Hazuki's true motives are questioned...Just what could be the reason for this chaos?

Thanks to Madara's scheme, Ryuusei is trapped in a warehouse on the outskirts of town...filled to the brim with his kitty comrades! Will he be able to claw his way out of this catastrophe?!

Protecting your turf, keeping other guys from pawing at your girl, showing everyone who's boss...it's all in a day's work when you're a street thug-er, a street cat!

All hell breaks loose for Ryuusei and Taiga when the Goblin Cat Tails' top cat shows up to the party, but there's something else about the calico boss that's got Ryuusei's tongue! With rumors of another uninvited rival going around, it'll take more than strong jellybean toes for the Nekonaki cats to protect their fish!