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

True to Klautz's command the specters flew closer to Klautz

But Klautz had never let his guard down. He had never trusted his instinct blindly.

So what if there was a chance that he could tame the specters? He would believed in his logical reasoning rather than acting on instincts. He was ready to pull out his sword any moment in case his assumptions were proved wrong.

But, he touched one of them and then tried to pull it into his inventory.

"Oh, so it can also work this way"

Klautz [Spirit Charm] Skill was working on these Specters and Klautz could tame them as well. Klautz didn't wait as he pulled in all the Specters in his inventory. He ran around the island capturing all the specters that he possibly could.

The end after the beginning