本編主人公・雑賀菊丸が祖父の死をきっかけに、己の宿命を知ってなんやかんやあったほぼ直後。 具体的に何があったかというと……。 1. この国には『亜人』と呼ばれる人と異なるルーツの者達が人知れず存在していて 2. そうした『裏』と人の社会を繋いできた存在が、主人公の生まれである雑賀の家で 3. 実は雑賀当主・孫市の隠し子だった主人公は、主不在の中、跡目争いに巻き込まれてしまって 4. 猫忍・藤花の愛ある指導の元、なんとか血の覚醒に成功 5. 襲ってきた長年の腐れ縁（チンピラ）を撃退し、なんとか一時の平穏を得た みたいなことがあったわけだが、内容からも読み取れるように状況は何も片付いていなかった。 最強の猫忍・藤花と、元暗殺者のチカを仲間に加えて、 雑賀の立て直しに取り組むんだかどうなんだという感じの菊丸の前に現れたのは、な、なんと！ たぬきに狐に実の姉に……。 果ては、どこか遠い空の下で過去にあれこれやってた風魔の猫忍達？ さらにさらに……といった具合に混沌の一途をたどる、現代の猫忍活劇最終章。 出し惜しみなしの可愛さで、あなたににゃんにゃんしちゃいます。

Our hero, Makibishi Kikumaru, has spent his mostly plain days in the company of his tanuki-faced family members (younger sister and grandfather), but his grandfather’s sudden death causes a major shift in his daily life. A cat-earred woman in battle dress storms in on the funeral vigil and lets loose with a machine gun. His younger sister turns into a tanuki-earred ninja. What the heck is going on? The one that comes to our hero’s rescue is a mysterious and beautiful cat-earred woman. “My name is Touka. I am here to protect you, Lord Makibishi, no… Lord Saiga Kikumaru.” These are the words that Touka speaks to a bewildered Kikumaru. 1) There are people that exist in this country known as “demi-humans”, as well as people of other origins, unbeknownst to the rest of the population 2) These beings served as ninja during the Sengoku period, and still exist here and there across Japan today 3) You were born into the Saiga family, who act as intermediaries between this “underworld” and mainstream society. 4) And so you are already involved in the struggle. If you don’t get serious about it, you’ll end up dead. (This part is vital.) …So it seems. Things seem to be a little on the serious (?) side this time, as the curtains rise again on a new NEKO-NIN chapter. With our brand new outfits, we’re going meow meow our way into your heart. [From [url=https://sekaiproject.com/game/neko-nin-exheart-spin/]Sekai Project[/url]]