I Studied Abroad in the Modern Times - Chapter 14: Joining Benefits?

when the most beautiful and popular girl of the whole campus offered Adam Eden, a certified loner the once in a lifetime offer to be the photographer and manager of her Only Fans account and also receive a percentage of her earnings, he was rightfully suspicious.However, in a desperate attempt to get some easy money, he went against his better judgement and accepted her deal.This decision would not only change his life, but would mark the beginning of his journey to Conquer every girl he's ever wanted–––––––––––––––––––––––––Every character in this book is 18 or olderNo netorase, some Netori (MC does the stealing not the crying)

“Gu Hangshen! Your sister stole my man, and you helped her do it! Your whole family is rotten!”“Whatever my sister owes you, I'll compensate you.”“And what will you compensate me with?”“Me.”“...”Later, he not only gave himself up as compensation, but he also came with a clingy little bundle of joy...

It was in the year 2800 of the Midgard calendar. Back then, there was a Overlord who once reigned supreme and had reached the very brink of subduing the world.

Huang Dan’s pain nerve is innately different from the ordinary people. A little tore in his skin can cause him to sweat all over his body painfully to the point of him unable to make a word out.

Somehow, he began to cross world, following Mr. System to do the tasks…

In the first world, Huang Dan realizes what it means to die painfully and to live to die again.

TL’s summary:
MC suddenly transmigrated and is bind to a system, requiring him to solve mysteries. Born with a higher degree of pain sensitivity, he met different people in the different worlds and learns what kind of emotion smiling is.

- Description from Novelupdates