A New Year's gathering with all the relatives. After exchanging greetings, alcohol and feasts are served, turning the house into a lively party atmosphere. However, amidst this, two pairs of parent-child relationships were not at peace... The aunt and nephew from the Yabe family and the Nanami family had been in a relationship for some time. The four of them were unaware that their respective parent-child pairs were actually in a physical relationship. They had been looking forward to today, the one day a year when they could meet openly. The two pairs carefully proceeded without being found out by other relatives... But unfortunately, they ended up crossing paths and finally learned the whole truth...
