I recommend "The Quick Crossing: The Male Lead Recovery System." Although the general plot introduction did not explicitly mention the plot of "Bullet Theory Break," the male lead in this sci-fi space-time travel novel can be said to be very fierce, which meets the requirements of "the male lead is super fierce." In addition, the title of the book also had the word "male protagonist", which perfectly matched the requirements of the title. I hope you like this fairy's recommendation. Muah ~😗