Transmigrated to Dragon Ball: Winning Over Bulma's Older Sister

Hit by a runaway truck from the start, Carlos transmigrates into the body of an unnamed passerby who's about to be killed by the shockwave. Despairing, he watches Yamcha curl up at the bottom of a crater, lifeless, and clenches his fists. [Ding! Supreme God-Making System activated. Please make your choice.] Choice A: Flee alone and scrape by in this extremely dangerous world. Choice B: Rush to the battlefield and change the tragic fate of the Z Fighters being wiped out.