Being a Passerby? Impossible

[System: Host, please be a passerby and don't steal the male lead's role! Jiang Ye: Got it. Then—— The system asked him to pretend to be dead, so he blew up the zombie nest with his backhand, and his reward was doubled; The system silenced him, and he used the plot prophet to cut off the male protagonist's opportunity, causing the system panel to spark; The system asked him to hide in the basement to save his life. He carried the missile truck to blast away the zombies. The system directly stuck in the PPT: "Are you fucking cheating?!" Dressed as a cannon fodder in a doomsday novel, and bound to a buggy passerby armor system, Jiang Ye discovered that as long as he "accidentally" ruined the plot, the reward would be doubled according to the nuclear bomb level. So—— The male protagonist Chi Cheng in the original book saw his thunder power being used by Jiang Ye to grill fish, saw his heroine being bribed by Jiang Ye with expired cans, and saw the artifact he should have become Jiang Ye's ashtray. He fell into deep self-doubt: "Where is the promised follower? Has this guy secretly evolved?" Jiang Ye held the mutated beast's leg in his mouth and patted the system's head: "I told you before that the ultimate form of Passerby A is for the protagonist to be my little brother." System: "... Is it too late for me to untie it now?"