"Breakup Agency" is an underground business that makes sure that men and women who are requested to Yui are separated. Yui, one of the members of this agency, has received another request. This time, the target is Mitsuki Hoshikawa, 26 years old, the wife of a company president. The client is her husband, who is also the company president. Her husband has another family and Mitsuki has become annoyed with him. Yui immediately gets to work. As the company president's secretary, she approaches Mitsuki and sways her with kind words and the pleasure that only a woman can experience. But Mitsuki, caught in Yui's seductive trap, begins to embrace the idea of ​​breaking up with her husband...