Ha-Im Yun lives in a world where people register their DNA into cloning databases, a world where human suffering has basically been eradicated. The brilliant mind behind this cloning technology is none other than Ha-Imâs boyfriend of five years, Geun-Hu Ji. Their relationship isnât perfect, but they make it work -- or so Ha-Im thinks, until she finds a dead body at her boyfriendâs house⌠and the dead body is hers. The next day, she wakes up with no recollection of the previous day until she finds a note from herself in her room⌠âHa-Im, if youâre reading this, youâre a clone.â (Source: WEBTOON)