Internship in Your Junior Year, But You Create an Umbrella Company?

[No female lead + dark theme + villain + behind-the-scenes] Zhao Ye, while interning at a factory, unexpectedly gains access to the Umbrella Management System, starting with an abandoned warehouse and rebuilding a global bio-empire! [Initial T-virus, upgraded to infiltrative type, then upgraded again... global infection!] [Zombie pigs, upgraded to bio-weapons, then upgraded again... Tyrant Legion!] [Damaged warehouse, upgraded to bio-base, then upgraded again... Hive Laboratory!] Have all the stray dogs in the city gone mad? Did the purebred guard dog the tycoon just bought run away in the middle of the night? Nobody knows, it was all my doing. Police: "We've checked all the city's surveillance cameras, only caught a yellow-robed delivery boy!" Military: "This area is completely out of contact! We're not facing zombies, we're facing a commanded army!" World's richest man: "Please, sell me an evolution potion! My gold, my aircraft carrier fleet, all yours!" ... When the apocalypse arrives, the world trembles under the T-virus, everyone thinks it's God cleansing the world. Only Zhao Ye, sitting on his bio-throne overlooking the global sandbox, gently pressed the "format" button.