I Became an Extra in an Adult Webtoon성인웹툰 속 엑스트라가 되었다 [연재]

After getting hit by a truck, I came to my senses and found myself as an extra in an adult webtoon!\r\nBut wait—what is this mission? If I don’t become the lead, I’ll be erased from existence…?\r\nAnd I even have to do it with the heroines…? Sorry about that, protagonist!