A girl I like calls me out and confesses, only for it to be a cruel prank that leaves everyone laughing at me. In despair, I impulsively jump—but survive after being rushed to a hospital. From that day on, mysterious percentages appear above people's heads. Most men show 0%, while women's numbers change as I talk to them and grow closer. I take a gamble and actually get laid, proving the figure is the chance that a woman will sleep with me. By targeting the highest numbers, I set out to become the hospital's unstoppable playboy.