HUNTC-138 What!? 80%? What is this number? The probability of doing it has been visualized, and only I can see it! What's with the number appearing above your head!

After being brutally rejected by the girl I liked, I fell down the stairs in despair and blacked out. But when I regained consciousness, I saw numbers and percentages floating above everyone's head! What are these numbers? After desperately investigating, it turned out to be the "chance of getting laid"! I found out that unexpected girls were after me! Now I'm invincible. I'll make my move on girls with high chances and easily enter paradise! Who needs love or romance anymore!