When Hikari, who worked in sales, was worried about whether this job was right for her, it was the president who kindly encouraged her. The president was a strong-willed man with a strong reputation, and Hikari began to feel affection for him as a member of the opposite sex. She knew he had a wife, but her love was unrequited... That man was her current father-in-law, Toru. Hikari accepted a marriage proposal from Toru's son, Atsushi. Because she wanted to be by Toru's side... And the time came for her to tell Toru how she felt. When she found out that Atsushi had been cheating on her, something inside Hikari broke free...