Found it.
Sex After Love 선섹스후사랑 (2017)
Synopsis: It's easy to fall in love. True love is hard. "The number of workers who work in the underwear design company is a new designer who is a colleague of the company. The PT Gong Soo-yeon prepared by the corporate design has an opportunity to confess her determination and eye-catching confession. This opportunity is very capable, and it also has every aspect of the boss's science department. Jang 무산되. One day Wabi Ryo was airlifted to the magic of fate. The mysterious power of the magic bracelet bracelet. Gradually fill my bracelet with my own desires and I can borrow her."