A few years after remarrying, Mirei had a good relationship with her stepdaughter, Manami, and was happy. However, Mirei had one regret... and that was her only son, Satoshi, born to her previous husband. Ever since they were separated when Satoshi was a child, Mirei has never forgotten about him, not even for a minute. She hopes to see Satoshi when he grows up... Mirei's wish becomes a reality. Manami brings her boyfriend home to introduce him to Mirei, but...