It’s My Life - Webtoon Manhwa

A depressed teenager wakes up 13 years later in an adult body after a deal for a ticket to heaven turns out to be a scam. At 17, Ju-in Jeon agrees to give up her body in exchange for a chance at paradise, but instead she finds herself in her 30-year-old body, trapped for 108 days while heaven’s agent searches for the fraudster behind the deal. During that time, Ju-in meets Do-gwon Ju, another victim whose soul was scammed into the same arrangement. As they face the possibility that the souls who purchased their bodies may return, they must consider whether to go back to their unhappy teenage lives or find a way to reclaim their futures.