18 Years Old

From their first meeting at age five, Hyunwoo and Heeseo were locked in a bad relationship. Even after reaching high school, Heeseo still treats Hyunwoo like he wants to tear him apart at any moment. But after Hyunwoo goes on a strange blind date at someone’s request, Heeseo suddenly starts acting oddly kind toward him. What is wrong with this guy all of a sudden? --- **Original Webtoon:**.