I recommend the following novels to you ~ "Electronic Life": The protagonist of the story is a rogue programmer. After returning to the United States in 1966, he began his journey to dominate the electronics industry and reconstructed the development history of the IT industry. This novel is a novel about urban life. It fits your genre requirements. "Reborn Innocence 79": This is a novel about urban life. The main character reincarnated in the 1970s, went back in time, and used his knowledge of the future to build his own power in the city. "Rebirth 1991: I Start From scratch": The protagonist of this novel also returned to the 1970s through rebirth. With his own beliefs and knowledge that surpassed the times, he made sure that everything that was lost would not be lost again, so that all tragedies would not repeat themselves. It was a novel about urban life. I hope my recommendation can help you. If you are interested in the above novels, you are welcome to take a look. If you need any further information or opinions, feel free to let me know!