New Year’s seat where all relatives gather. Greetings are all right, sake and treats are served, and the inside of the house is completely in a banquet mood. However, in the meantime, only one pair of parents and children was not calm in their hearts … The aunts and nephews of the Yabe and Nanami families who have had a relationship for a long time. The four, who had no way of knowing that their parents and children were actually in a physical relationship, were looking forward to today’s day when they could meet only once a year. Two groups who try not to get caught by other relatives … But unfortunately, they get into a mess and finally know all the truth …