Her User Manual

Seungah, who has sadomasochistic tendencies, is brutally dumped by her adorable younger boyfriend, Minwoong. Five years later, Minwoong returns as the newest employee at the company where Seungah works. Now much more mature and attractive, he completely shakes her heart. Meanwhile, Jiseok, her coworker, has been secretly in love with Seungah for years. And so begins the competition between the two men to win her heart… Original Webtoon: Toptoon, Anytoon, Lezhin