Kashiwagi is someone with a special ability to see the outcomes of couples. However, for someone who is hopeless in love, she doesn’t understand the meaning of happiness in love nor the meaning when love ends in sadness. Sano is the owner of the café and Konno is someone who works at the Café, but in reality they are “Professional Relationship Destroyer”s. Kashiwagi also works at that café and therefore witnesses the various relationships of other couples. Through various endings in these relationships, some unreasonable, some questionable, Kashiwagi learns “What is love” and “What it means to be in love” and learn about the essence of love which will help her mature.