Ninjutsu for All, Turning into a Yellow Flash at the Beginning

Traveling to a parallel world, I found that people here are using ninjutsu, and the knowledge taught in school has also become the movement and condensation of chakra. Every student will undergo a Chakara attribute test when they turn 18. Every once in a while, a secret place will appear, containing various ferocious beasts. Of course, there will also be various tempting blood inheritance limits, secret scrolls, and ninja tools. Human beings continue to improve their abilities in order to resist the ferocious monsters from other worlds. However, everything is not that simple. Various conspiracies are coming one after another to compete for the interests of major families. Long Yan relies on his strength to crush all the conspiracies. The introduction is weak, please read the text