I'm the Chief of the Book of Ninja

Tanzhe accidentally got involved in the world of ninjas, and with the help of a system called the Book of Ninja and a silver-haired girl, he began to solidify his path to becoming a ninja. Hidden weapons, gunpowder, and ninjutsu are endless! ! Why become a ninja? Obviously following the crowd is my idea, but in this world where monsters are everywhere and full of killings, only by becoming strong can we survive better and be as arrogant as we want! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.