Reborn as Sun Wukong's Apprentice, He Is About to Become Evil

[Decisive killing + funny and easy + you become stronger by fighting + Duanmuyan-style protagonist] An agent fighting against international criminal organizations died in the mission, but was reborn as Wukong's apprentice. Sun Wukong saw that he hated his evil, so he taught him a special skill. As long as he keeps fighting, he will continue to become stronger. After completing his studies, he subdued demons and eliminated evil spirits. Later, they also met the disciples of Erlang Shen and Nezha, and the three of them embarked on the road of punishing evil and promoting good. The first time—— Demon Lord: "What's wrong with me eating people? It's natural for the weak to eat the strong!" Ning Kaichen: "Then since you are weaker than me, just accept your death peacefully!" Chapter 4—— Little Demon: "Is he still a human being? Why is he more ferocious than a monster?" Little Demon: "Shangxian, I have only eaten three people. I will repent in the future." Ning Kaichen: "Then go to the King of Hell and apologize to the victim." Chapter Six—— The Resentment Devourer: "What happened to the evil cultivator? Do evil cultivators deserve to die?" Ning Kaichen: "Say such words that insult my wisdom will only make your death worse!" Chapter Seven—— Captain of the city massacre: We are the commander's personal soldiers, ordered to massacre the city! Ning Kaichen: It doesn't matter whose soldier you are, the beasts who massacred the city deserve to die! Chief: There are young and old in my family, please forgive me! Ning Kaichen: Do the people you disembowel have any family members? Die! Chapter 23—— Ning Kaichen: "If you beg me, I won't let you go." Golden-winged Dapeng: "The Buddha was willing to correct me, why don't you let me go." Ning Kaichen: "Then have you changed? Even if you change, if you eat people, you have to pay for the lives of those innocent creatures who died!"