It would be better if it wasn't my destiny

Minano Onuma, who works at a travel agency, has just broken up with her lover of six years, and has turned 30 in the blink of an eye. At this time, a new colleague came to the company - Ureshino Ekinari. Ten years ago, the two of them had partners but fell into a physical relationship and were each other's "accomplices". Now that they met again, Yi Cheng still used that familiar whisper to provoke her: "Are we destined to be together?" The pleasure and desire that revived with the reunion made Minano fall into despair again, but Yucheng's true feelings could never be grasped - is she her true destiny or a playmate? The secret relationship that she could not get rid of even after she became an adult made her indulge in it step by step. This drama is adapted from the original manga of the same name by Mizutani Ai.