Who is a ninja? Do they really exist? - Quora

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Are ninjas true? - Quora

Did ninjas really exist in all of Japan in the past? - Quora

Are ninjas true? - Quora

Does Donatello deserve to be a Ninja Turtle? - Quora

Are ninja stealth techniques real or fake, and did ninjas ever

Do Ninja exist in real life or just in movies and TV series? - Quora

Who was the strongest shinobi before Naruto? - Quora

Are ninjas true? - Quora

Is Shredder a ninja or a samurai? - Quora

Was Madara Uchiha actually trying to do good? - Quora

Who are some famous real-life ninjas? - Quora

How do ninjas carry shurikens without hurting himself? - Quora