"So what you're saying is... ninjas are actually descendants of aliens? And they used the power inherited from those aliens to overthrow the aliens who tried to rule Earth?"
Sonic stared with his mouth wide open, utterly dumbfounded.
This was completely different from the education he had received growing up, as well as the history he had learned after entering society.
At least in this world's history, ninjas had never been a profession that stood in the light. They were a group of outcasts rejected by mainstream society.
They did not even deserve the most basic legal identities.
Sonic himself, for example, was a fairly well-known wanted bounty criminal.
But now, a senior claiming to possess "true ninjutsu" was suddenly telling him that ninjas were actually humanity's saviors, that they had defeated the aliens who occupied and ruled Earth thousands of years ago, and that they had hidden in the darkness to silently protect this world.
Anyone would have trouble accepting that right away.
Watching the youth seated before him as his entire understanding of the world collapsed, Allen's lips curled slightly beneath his mask. He nodded with an unfathomable air. "That's right! This is the greatest secret about ninjas and the Ninja Sect hidden within history. Most of today's ninja villages are Impostors who don't even know what a ninjutsu cultivation system is. They are as disgusting as rats hiding in the sewers. What they train are Assassins, not ninjas."
"Then, Teacher, how can I master true ninjutsu?" Sonic pressed impatiently.
Compared to history, he was clearly far more interested in powerful strength.
Especially the astonishing Fire Release, Water Style, Lightning Release, and Shadow Clone Technique that had been demonstrated earlier. Any one of them could greatly enhance his strength.
"First, you must learn the true source of a