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:** [Bomtoon](https://www.bomtoon.com/detail/eighteen), [Lezhin](https://www.lezhin.com/ko/comic/18_years_old), [Bookcube](https://www.bookcube.com/toon/detail.asp?webtoon_num=200179), [Naver Series](https://series.naver.com/comic/detail.series?productNo=5072434), [KakaoPage](https://page.kakao.com/content/54919866)