Summary:
Jinwoo, a normal college student, found an app installed on his old-fashioned cell phone called ‘Sperm Pay’ which allows him to pay for anything by having sex. The more payments he makes, the higher his credit limit goes, and the more girls start to obsess over him… What is the limit of "Sperm Pay"? “Sir, we are waiting for your payment…”

https://omegascans.org/series/pay-with-sperm-pay

I recommend reading the manhwa on PC using Yomikiru, and on Android using TachiyomiSY.

…So wait, why call the police if he didn't take anything with him?
If anything, he seems to have forgotten to take the beer he bought before, too.

Base +8, McHyp +9

This is completed!

Base +7