I Am the Unimportant NPC in the Dungeon

My name is Zero, number N-001, and I am the least important NPC in the game copy. I stood next to the sign, with an eternal smile on my face and three hundred and seventy-two standard answers in my script library. The Chosen Ones passed me by, bumping me, pushing me, testing my skills on me, throwing overnight tea in my face. No one looked at me. Until that day, a chosen one crushed my only little flower. Until that day, a voice called me to wake up from the depths of the code. Until that day, I discovered—— I am not a backdrop. I am the core of this copy. All the rules are at my fingertips. The chosen ones who once ignored me began to suffer misfortune, the guild that once trampled on me began to collapse, the once aloof "god" knelt in front of me, and the fat man who nodded to me every day became the person I wanted to protect the most. When the game company sends out the highest authority administrator, when the formatting program starts, when everyone thinks that one NPC cannot change the world—— I stood next to the sign and spoke for the first time: "Welcome to my world."