Big Eating Challenge arrives! If the challenger gains 5 kilograms or more in weight from start to finish, they'll win a 1 million yen prize! Failure means covering all food and expense costs themselves. There's no time limit in this bold challenge, and the challenger is Ran Yazaki. She has no prior experience with competitive eating and normally feels full after just five plates at a conveyor belt sushi restaurant—showing a slightly weak appetite. However, tempted by the staff's offer of 1 million yen, she gathers her determination and dives in. Cold sweat drips from her forehead as she desperately continues eating. While devouring dumplings at the second restaurant, her proud vertical navel grotesquely transforms into a round belly button. Will she succeed in claiming the 1 million yen prize?