Five years after marriage, Rin has become busy with work and her relationship with her husband has begun to show signs of misunderstanding. - And the misunderstandings turn into a rift between the couple... - When she was worried and had no one to talk to, she turned to her boss, Oshima, for help. - The two hug each other tightly and comfort each other, as if sharing the pain of being betrayed. - And so the days continue as they continue to secretly get closer to each other in secret. - However, Oshima notices that Rin has mixed feelings about these days...