I Became a Cannon Fodder in a Rich-Protagonist Novel

Reincarnated as a cannon-fodder character in a tycoon novel, he's 188 cm tall, weighs 268 jin, and has to help the original protagonist, Song Xingci, go from an obscure streamer to a major internet celebrity. Lu Chen: Okay, I've got this in the bag. The original protagonist's rise begins with his weight loss and investments! Main gong, 1v1, both virgins. The original protagonist, Song Xingci, is the shou. Warnings: 1. There are plagiarized works in the story. The protagonist makes reskinned games to cash in, including mini-games that don't exist in the story's world, like "Merge Watermelon" and "Sheep a Sheep." 2. There is stock market content. This is a fictional setting, a fictional setting, a fictional setting. I'm not promoting the market; after four years, I still haven't broken even on one of my own investments! P.S. The original idea is really old... I couldn't think of anything else to write... Theme: Even cannon fodder has to try to live well!