My 0 Date Marriage to Mr. Toxic President And Contracted for De Facto Sexual Favors?!

Haruna, a stubborn career woman, has a younger coworker who is getting married and quitting her job. When she starts to get teased for still being single, she blurts out a lie, "I have a fiance." She wants to take it back, but things snowball, making it near impossible to do so...! When suddenly, the president of their company and Haruna's sworn enemy from childhood, Soichi, proposes a one year contractual marriage?!