Yasuyori has obtained a decorative ball known as a piñata at the Christmas event he has taken a part time job at. It is a certain culture's custom filled with candy and smashed by people on days of celebration. It is also said that the piñata is a symbol of sin, and by smashing it you can spread hope and happiness. This time Yasuyori is one of the piñata party members and taking part in the festivities. He has resolved himself to not begrudge himself for sacrificing himself in his Santa costume.