Review Detail of ImNotNarcissistic in Single Punch Man in a Cultivation World

I was so excited when I saw Single Punch Man in the title and thought that this was a OPM fan fic, yet... who the heck is huangfu longdao??? And there’s even a system as well? You don’t need a system to become op, just 100 push-ups, 100 sit-ups, 100 squats, and 10km running every single day for 3 years.