Truth who raised his son, Hajime, with just one woman. The hobby of truth, who is busy with housework and work, was to look at the mail-order catalog. One day, when I was looking at the mail-order catalog as usual, a certain orthodontic underwear caught my eye. Mari, who was so beautiful in design that she really wanted the corrective underwear, reached out to a box that had been cherished. From the important box that says "First New Year's Savings", Mari puts on her first New Year's gift ...