My Brother Is the Leader of Righteousness, How Bad Can I Be?

My name is Lin Xie, and my brother Lin is the famous leader of the Immortal Way in all of Jiuzhou. He is glorious and majestic and is respected by hundreds of millions of people. And I am his good-for-nothing younger brother who "hates iron but never becomes steel", the number one negative teaching material in the world of immortality, a playboy who commits all kinds of evil and is hated by everyone. Today I kicked the saint down the mountain, tomorrow I stole the fairy's clothes and blew up the alchemy hut the day after tomorrow... The righteous way gnashed its teeth at me, while the evil way thought I was a malleable person. They don't know that I have a [Great Evil System] in my mind, and I can become stronger as long as I do evil. Every time my brother took me back to the mountain gate, he would cry out bitterly: "Xiao Xie! Your nature is not bad, why do you have to let yourself down!" I was submissive on the surface, but I was madly complaining in my heart: "Brother! I stole the fairy's obscene clothes to save her from being cursed! I blew up the latrine because there is an ancient demon cave hidden underneath! I beat the Holy Son because he is about to be possessed by demons and massacre the city!" "And brother, do you know that every time you break through, my inner demons are secretly carried away by me, the 'bad brother'?" Until one day, the devil came to the world, and my brother's brilliant and flawless sword energy... Was actually tainted with the purest devilish energy. The whole world was in uproar and faith collapsed. Just when he was being pointed at by thousands of people, I, who had been hiding behind him, slowly walked out and stretched. "Let's show our cards, stop pretending." "My brother is the leader of the righteous path, how can he be evil?" "All the notoriety belongs to me alone. But whoever wants to touch my brother today must first ask me, the 'true devil,' if I agree!"