It was Tatsumei who got pregnant and gave birth when Nozomi was young. The two were strangely good friends, partly because they were close in age. On their days off, they went shopping and traveled together, and they were more like friends than parents and children. One day, Tatsuaki invited Nozomi to a hot spring trip during the university summer vacation. As usual, Nozomi was looking forward to having a fun trip with the two of them. However, Tatsumei invited her on a trip in order to tell her something important.
