This week's presenters for "Everyone's Theory" are Ginshari! They'll be testing the theory that "there is no one in this world with a narrower forehead than Impossible Hirukawa!" Does someone with a narrower forehead than Hirukawa actually exist in this world!? In the fourth installment of "Sushi Master," a new stage will be added to the original rhythm game "Sushi Master," where you eat sushi according to the lyrics of "Sushi Kui Nee"! Big eaters will take on the challenges of "The Lunchbox Song" and "The Mushroom Song"!