The author is Tricked

What is "BRUTALITY?" __ Satoshi was a mangaka for his life. He wrote many stories, but everything were flops. But one day, he finally made a manga called Iron and Ink: What is brutality? The manga was an instant hit. TV, obsession, fans, popularity—everything. But slowly, it fell off. Readers moved on. Satoshi was desperate—desperate to make his manga popular again. Then a man appeared. Told him to write the next chapter. A chapter where everyone suffers. And put 3 drops of his blood... He did it... but little did he know the man was actually a character he wrote... TRICKSTER! And he tricked Satoshi into getting inside of the brutal world of Iron and Ink where none is a true friend. He got transmigrated in a world where.. Everyone is just an opportunist. And the main objective for Satoshi is to... SURVIVE