The Difference in Yong-do

Three years into working life, Woo-yu has lost all her youthful enthusiasm and innocence, living a dull and cynical routine. That is, when her first love from high school, Lee Yong-do, suddenly reappears. This accidental reunion in her dreary life feels like a gift. No, she thought it was. That is, until she realizes that their relationship is strictly divided into the absolute roles of superior and subordinate...

Original Webtoon:
Naver Webtoon, Naver Series