Shiny_Shirogane

Klautz had lived his whole life as a ninja... as a tool.
Yet before dying he had killed all of ninjas of his clan. He had defied the ninja code and acted on his own discretion. A code he had followed his entire life.
Even in his dying moments he had chosen a harsh death.
*Whoosh*
Suddenly, Klautz opened his eyes. By some miracle, he was still alive. He then realized that he had actually gone back forty years in time.
"I will wipe out all of the ninjas from the face of HELL!" 

Join him as he fulfill his desires and his goals, all of which he wasn't able to do before.

Note: The cover isn't mine. If the owner wishes for it, I can remove it.

Shinobi From Hell

"Butler, how many cavalries work under me at the moment?" the boy as he gazed outside of the carriage.

There was only one man along with him dressed in black who received his question.

"And how many troops?" the boy asked nonchalantly.

"A whole battalion of infantry, sir" the man replied while checking his watch.

While Klautz and the other ninjas lived a life of solitude. Most of the hells folk relied on armies and powerhouses for the sake of their survival. Beasts at the deathly forests didn't threaten them as much as the threat from the humans. The competition for the race to acquire resources was as fierce as ever. As such only a fool would be willing to work alone.

The only reason why the ninjas were able to survive in such a dog eat dog world was only that they weren't part of the society in the first place. They lived in the shadows. They ignored all and were ignored by all.

The Dark Camp