Tower of Calamity: Beginning with the Last Singer

My name is Lin Ye, CEO of Pale Tower. My main business is to spread disasters to all realms. On my first day at work, I drew a UR-level employee named Arya, a little girl who can destroy the world by singing. As a result, this guy took a break, and then I worked hard to help her draw a pie and talk about her ideals, and finally trained her to become my ace project manager. Later, I recruited an SSR-level demon Mephistopheles. I took a look, what a great guy, born to be a gold medal salesman! I immediately sent him to the new market and asked him to sign the contract with overbearing terms, with the goal of draining the client's sins and souls. Now he is the company's top seller. As for those N-level cannon fodder? Those are valuable assets of the company! Acid slime is a multi-functional mobile trap, and light-eating jellyfish is a disposable energy cannon that can self-explode with overload! The cost is only two cents, the effect is remarkable, and it highlights the utilization of waste. My corporate culture is: performance is king, customers should be put aside. What? You say other tower owners are competitors? The traveler whose world I destroyed is my enemy? No, no, no, they are all my potential customers and high-quality leeks. The system says that I am the most wicked among the 9999 tower owners, but I don't think so. I, Lin Ye, am a black-hearted person who is committed to making everyone in the world live a good life... Ah no, a conscientious entrepreneur.