You should write a full story of this it was very enjoyable I would love to read it as well it had great plot you could also use flashbacks for pieces of the groups memories say for different things that happened for each of them so people can get a feel for the characters personality as well as a bit of their mindset. But it's all up to you if you want to do it good luck for the future
Author's response
I am planning on making a full-blown story of this one shot once I am more knowledgeable of the Narutoverse.
While people have made stories where the Narutoverse is under attack by zombies it doesn't seem right. The ninjas can do a bunch of godlike shit by making hand signs and they can't even kill an enemy who's slower than them.
In my story, the undead act in a similar manner to the zombies we see in Call of Duty: Zombies. They adapt to the way ninja's fight with every encounter, they grow stronger with every encounter (which in CoD: Zombies these encounter's can act as waves) and they can run, sprint and jump up ledges several feet above them.
And let's not forget the teleporting Hellhounds, the crawlers that teleport drectly in front of you in moon and what I like to dub "Super zombies" who are almost impervious to damage.