I Started with a Mental Illness Certificate but I Am Really Mentally Ill

(Big male protagonist + Shuangwen + Gaowu + Madman + Face slap + Urban + Superpower + Funny + Anti-routine + System) The male protagonist is crazy and even more psychotic than mentally ill. My name is Wang Fan and I am a mentally ill person. The kind with a mental illness certificate. That day, I was sitting on the head of the black-hearted boss and shitting (really shitting). I accidentally hit the corner of the table with too much force, and then I traveled through time. I traveled to a parallel world called Wu Xing, which was the same but different from my original world. Why is it different, you ask? ! Whose sword cultivator goes to deliver food and run Didi, while the thunder system goes to work in Wuxing Power Grid... I couldn't help but stroke the hair between my forehead, um... Wait, show... Hair? ! I quickly looked down. Fortunately, it was still there, still looking so majestic. I put my hands in my pockets, trying to regain my glory, but I touched a red book. Don't think too much, it was not a marriage certificate, a mental illness certificate, or a first-level certificate. "Ding, a mental illness certificate has been detected..." "Now turn on the [are you crazy] system..." When I reach the pinnacle of martial arts step by step, the system will fucking tell me that I am the final villain BOSS!